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Klim D3O Viper T5 Pro Back Protector
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Klim D3O Viper T5 Pro Back Protector

Replacement CE Level 2 D30 Back Pad for Klim Jackets.

D3O's Viper back protector benefits from Airwave Technology and is extremely flexible, low profile and lightweight, whilst offering incredible protection. 

Measures 17" Tall by 11" at widest point.

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Klim D3O Viper T5 Pro Back Protector 4.7 5 193 193
Poor production quality First the pro's: (1) Super fast shipping from Revzilla (2) Fits my Belstaff Oliver Mount Blousant jacket perfectly Cons: (1) Very poor production quality; the air holes are mostly closed off and a pain to cut open cleanly. There's also some bubbles where clearly the mould didn't fill out properly during the manufacturing process. Being somewhat familiar with injection moulding, when you set up a production line you need to work out some kinks initially to get the temperature just right, the pressure just right, the fill cycle time just right, and the cool down and ejection just right. It should take a half day and some sample production runs MAX. That's if you put in the effort to ensure that you're producing a quality product, which D30 clearly didn't feel like. Very disappointed to buy a (not cheap) premium product made out of (supposedly) state of the art material, and it arrives looking like something you bought on the street corner in China Town for two bucks. I have the D30 elbow and shoulder pads in my jacket, and these were generally well made. (2) It smells quite bad. I've been airing mine out, hopefully the smell goes away. I can't put my finger on it, but it has a very familiar and bad smell. Again, my other D30 pads that came with my jacket don't smell. I clicked the Recommend this Product, because lets face it, if you're buying it you're stuck buying it. There's little to no alternative for the few jackets that this is made for. September 24, 2015
VERY comfortable and great air flow I replaced my new Seesoft back protector with the Klim Viper in my Rev'It! Sand 2 Jacket because it was way too hot in the heat. The Viper back protector is vented but also has channels that rests against your back promoting more air circulation. Thinner than the Seesoft and very comfortable during rides. No issues fitting in my jacket. September 23, 2015
Great protection/ bad fit Bought this to fit into my jacket I bought. Was told I hade to trim to fit. It fits in back pocket and is kinda loose. No trimming needed. Jacket is a tourmaster 4.0 September 21, 2015
Excellent, Flexible Back Protection When SAS-TEC Just Won't Work This armor is a massively more protective version of Icon's much thinner ($25) D30 back armor, which I'm quite sure only meets the Level 1 protection standard. I believe SAS-TEC is the best armor, whether it be for back, shoulder, elbow, or knees. I have upgraded three jackets using the SAS-TEC back armor that is recommended for Revit jackets - two in Revit jackets, and, with some box cutter trimming, one in a Leather Icon Accelerant. Apparently, none of the jacket companies has been sued so there must be a statement somewhere in the fine print that says something like, "I understand that fools are easily separated from their money, and that the 25 cent piece of foam that comes with the jacket and which occupies the space where honest, substantial back protection should be, provides absolutely zero - zippo, nada, none - and that unless I am a moron and deserve and/or desire a serious back injury, I will acquire, at my own expense, a Level 2 Protecter." I purchased an Alpinestars mesh summer jacket that not only had no protecter, it didn't even have a pocket to hold one. I purchased the Klim D30 Back Protecter for that jacket and paid a seamstress $40 to hand sew it into the lining of the jacket. I originally intended to do the sewing myself, and could have, if I didn't mind the stitches being visible on the outside of the back of the jacket. It proved a bit tricky to insert the needle and kevlar thread through the D30 back protector, into the liner, and back, without penetrating the outside of the jacket. I think similar sewing, or trimming techniques could be used to add substantial back protection to any jacket that needed it, but especially for casual leather jackets that are designed more for fit and comfort - on and off the bike - than for providing protection in a fall. A good many leather jackets, for example, those made by Spidi, state they are designed only to receive a Level 1 back protectors. Since this Level 2 Klim D30 Protecter is highly pliant, I suspect it could be fitted, either with the aid of a box cutter, or with the use of needle and Kevlar thread, to provide an additional measure of safety. (To have room to fit the Klim D30 in this manner, in some jackets you'd probably have to go up a size.) September 14, 2015
Good upgrade Upgraded the stock CE level I back protector in my Icon Hypersport prime jacket. Heavier and thicker, makes me feel way much protected than the original. Have ridden with it several times now in Florida, and it doesn't seem to limit airflow anymore than the original. That said, prepare to punch or cutout the holes yourself in any of these D3O back protectors because at least half are plugged. Slightly wider and taller than level I protector but still fits the pocket. August 31, 2015
I feel safer... I ordered the back protector to compliment my Klim elbow and shoulder protectors for my Klim Traverse jacket. Everything goes where it should and with ease. The pads obviously add weight and volume to the jacket but I don't notice it when riding the bike. The back protector seems to cut down on the rear ventilation but when it's 95 with 60% humidity I don't think anything short of a t-shirt and shorts is going to make me feel good. I haven't had to use the pads yet but I'm sure they will be fine. They are a little stiff when you first get them in and I feel like they haven't "broken in" a little bit but then again maybe I'm just used to them now. I wouldn't feel as comfortable (safe) without them. August 26, 2015
Crash tested I've had D3O padding in my street jacket for about a year now and always loved the fit and flexibility. A few months ago, I decided to upgrade my track suit's armor to full D3O padding. Last month I crashed fairly hard at the track, missing a corner at about 50-60mph and losing traction in the grass infield. I slammed down hard on my R shoulder, my R leg slid under the bike for a while, and I spent a fair amount of time tumbling. My only major injury was a ligament strain in the R shoulder that I'm fairly sure could have been worse. I can't say for certain that the D3O worked any better or worse than other padding would have, but I walked away. I'll keep on using it for as long as it's available. August 24, 2015
Comfortable fit, reassuring protection This back protector fit well into my Joe Rocket leather jacket, after stitching up the bottom of the pocket to keep it high enough. Protected me well in a crash with a city bus last week! August 10, 2015
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Have a functionality, fit, or otherwise product-specific question about the Klim D3O Viper T5 Pro Back Protector? Ask it here! If you have a customer service or shipping question, please direct it to our Customer Service department.

Klim D3O Viper T5 Pro Back Protector
Already Asked: 21 Questions, 144 Answers
Sort by:
RevZilla Store asked: Why did you choose this?
Keith D: To upgrade the armor in a jacket I own. Sep 30, 2015
christophe d: safety first Sep 26, 2015
Floyd K: Thinner than others, breathability and CE2 rating. Sep 21, 2015
David R: For added protection for my Tourmaster riding jacket. Aug 22, 2015
Raymond C: D3O, good air flow, and thin for the level of protection that is provided. Aug 17, 2015
Lorenzo S: Supposed to be among the top performers in this category. Aug 12, 2015
jason l: I bought this to replace the inner foamy shipping pad carp that came with the jacket.. Aug 6, 2015
M I: Upgrade from foam protector that came with jacket. Jul 28, 2015
Detlef M: Chose this protector, because Revzilla recommended this one to fit my Cortech Latigo 2.0 jacket and because of the good reviews. Jul 12, 2015
John H: I used a box cutter to shape this Back Protector to fit in the back pocket of a Roland Sands leather jacket (the jacket comes with no armor anywhere, but it does have pockets). I think it provides about the same amount of protection as the Forcefield back protector that is recommended, and at a lower price. The key is to cut very carefully and precisely. Jul 8, 2015
O R: replacement for Klim back protector Jun 23, 2015
Lev K: more flexible than dainese protector, meaning more comfortable although it might be a little heavier Jun 19, 2015
Greg D: Protection May 28, 2015
Timothy C: soft until you whack it May 23, 2015
David B: Provides better back protection than CE1 that came with jacket. Can be trimmed to fit Olympia Renegade jacket. Recommended by Ryan at Revzilla.
UPDATE: Turns out I did not "have" to trim it for the Olympia Renegade. It is wider than the pocket but the pocket material will stretch enough to accommodate the back protector and the back protector is flexible enough that it can be "rolled" to get it into the pocket. Not sure if long term the pocket edges may tear.
May 11, 2015
Keith M: To replace back protector in the Firstgear Mesh Tex Jacket. May 1, 2015
" ": acceptable price, interesting material, CE certified, and highly compatible. Apr 27, 2015
J A: I got three of these one for each leather jacket and one for my textile summer jacket. It molds to your back as the temperature rises and although I've not had to find out it hardens on impact. (at least it does when I've dropped it or dropped hammers on it. Apr 23, 2015
Colwyn M: After looking at other reviews, the D3O Klim back protector seemed to be a more economical$ choice as well as offering greater flexibility unlike some of the other bulkier and more rigid back protectors Apr 21, 2015
ken s: Want to upgrade my everyday icon jacket with a better back protector. Used to just have a foam insert. Apr 13, 2015
Brett G: I bought this to replace the foam protector in my Firstgear Kilimanjaro Apr 3, 2015
Peter Jay J: safety, comfort Mar 31, 2015
Roman M: Like enhanced protection Mar 19, 2015
Vinton K: upgrade Mar 9, 2015
Jorge P: Important to add protection to back and fits perfect in firtsgear jacket Mar 3, 2015
Anthony M: Recommendation from Revzilla Feb 19, 2015
barry g: Replacement pad for first gear kilimanjaro Feb 18, 2015
A M: To fit my Firstgear Kathmandu Jacket and for the extra protection Jan 17, 2015
Andy m: Reputation/price Jan 16, 2015
Joseph I: I like the material of D30's pad's and since this one is 2 inches taller and one inch wider it should fill out the back pad area of my Joe rocket more fully than the 25 dollar men's D30 version I am currently using. Jan 8, 2015
mario s: safety Jan 7, 2015
Todd H: because of the D3O online demonstration I viewed. Jan 3, 2015
Devon S: Easy to cut down to fit into my Revit jacket. Dec 31, 2014
dorinda o: drew recommendation and upgrade protection Dec 18, 2014
James O: Highest Rated Spine Protector I could find at reasonable price. Already had the D3O Level 1 which I liked and wanted the upgrade! Oct 31, 2014
Ross A: My First Gear Rush jacket had a non-CE rated foam back pad that was an odd size and this back protector could be trimmed to fit. Oct 25, 2014
Sean M: great support and peace of mind. fits in my scorpion jacket nicely Oct 14, 2014
Chris B: retrofit of a jacket. Why cant all the makes agree on the same shape/size!!! Oct 13, 2014
Charles P: Light weight, comfortable, flexible Oct 9, 2014
JOEL K: My second. I am confident in its impact performance and excellent ventilation design. Oct 7, 2014
J E: Read reviews and saw it fit, good price, and level 2 Oct 6, 2014
Paul M: An upgrade to the standard back protector in the Device leather jacket. Sep 30, 2014
Daniel C: Already had several of these, but one split and in classic Revzilla style, they replaced it free of charge. Nobody beats Revzilla for standing behind what they sell. Sep 23, 2014
Brian W. W: Back protection and ventilation. Sep 20, 2014
Don K: I wanted a back pad that was a bit more comfortable and would allow air to move around better in my Klim Jacket. I wasn't disappointed. Sep 13, 2014
Greg T: Flexible yet very protective. Sep 10, 2014
Aaron F: Its a level 2 and D3O is a awesome product for protection Sep 2, 2014
Eliseo V: Care about my back Aug 23, 2014
Mark S: Purchased this to upgrade the protection in my Cortech GX Sport Air 3.0 Mesh Jacket Aug 23, 2014
Tim S: CE level 2 protection that is said to fit in Cortech jackets Aug 19, 2014
Andrew H: It was the best deal on a D30 back pad. Aug 7, 2014
Kimberly B: I bought the Rev'It Xena leathers and Revzilla is out of the back protector for it. I emailed to ask if they have another that will fit the jacket and is quality for track / racing. John recommended this protector so I'm going to give it a try and hope it fits my jacket.
I've never tried one of the softer, more flexible protectors. I'm looking forward to giving this a try and hoping it provides the protection needed.
btw: I love the Xena leathers, though they are pretty hot in the CA summer.
Jul 23, 2014
Robert T: level 2 protection - best protection you can buy - worth twice the price if you go down! Jul 16, 2014
Alfred C: As I get older, gear that will help me keep more of my skin in an unplanned get-off becomes a bigger priority. Protecting the back means getting to walk away rather than being rolled away. Also, the improved impact resistance is simply a huge deal. Blunt force trauma kills more motorcyclists than anything, and hitting a tree while "t-shirting it" is guaranteed to leave behind some of your skin, which can't be grafted back on as easily as leaving your skin intact with better, safer riding gear. Jul 15, 2014
Daniel B: D30 technology and CE level 2 on 50 bucks. A good deal! Jul 12, 2014
Leonard P: Safety Jun 25, 2014
Jaspreet L: Great level of protection and very affordable price. Jun 22, 2014
Brian S: CE level 2 upgrade. Jun 19, 2014
A S: I needed a better pocket type protector and the D3O option seems to offer the most protection for my dollars. May 28, 2014
Sang L: needed to get a back protector for Alpinestar dusk jacket. One of the revzilla reviewer recommended it. May 27, 2014
Carlos F: I need a very good back protector and one I could use on multiple jackets from different vendors. This has been perfect for my Scorpion and Taichi jackets I've used them on. May 7, 2014
Richard E: I wanted to upgrade the armor in my wife's jacket and decided to give these a try. They came highly recommend. I ordered one set to try and if they work out I will get another set for me. Apr 24, 2014
Joseph k: I wanted more back protection than a piece of foam rubber. Apr 16, 2014
Donald R: Toumaster Transition 2 Jacket badly needed an upgrade. After cutting it down a bit, it works very well! Apr 10, 2014
David D: Looks like the latest tech. Apr 10, 2014
Genady L: It fits my Klim jacket and my two Dainese jackets too! Apr 9, 2014
Rey V: Level 2 protection in a very shape conforming material. This is what I have been waiting for. I ordered the Forcefield Pro Level 2 and the Klim Viper T5 at the same time and ended up returning the Forcefield. I bought 2 more to upgrade the armor in my other jackets. The best bang for your buck! Period. Mar 29, 2014
Tony C: "New" technology, follow the curve of the back, soft material and the tests on the net are very good. Jan 18, 2014
A S: CE 2 protection at a great price Jan 3, 2014
H Ross R: upgrade my existing gear Dec 11, 2013
Carolyn J: gift Dec 8, 2013
Albert H: Great ratings, CU Level 2! Oct 18, 2013
John A: CE level 2 rating in warm weather Oct 6, 2013
Fede S: No back protection with my triumph jacket. Aug 31, 2013
Urooj A: Best back protector for the Price. Best back protector to where I trust my life in it. Just happened to be a great price. I added this into my Dainese Shotgun Jacket. It's as if they were made to go together. Research Klim, this material will protect your back. Even when it's not, It's not bugging you, bulky, or uncomfortable. I'm very happy with this purchase. Great recommendation by the Team at Revzilla. Thank you! Aug 30, 2013
Hao D: Didn't want to wear my race back protector on the street. These were a great choice without sacrificing airflow or protection. Aug 28, 2013
Gaurav K: Was looking to upgrade my back protection in my alpinestars jacket and D3O is one of the best options. CE2 certified, comfortable to wear and less rigid than my previous back protector despite offering a higher level of protection. Great buy. Been using it for 4 months now and think this is money well spent. Aug 21, 2013
GREG B: I put this in a cheap Bilt Jacket to upgrade the armor and replace the crappy foam back pad. It fit great and feels good in the jacket. Would recommend this to anyone looking for back protection Aug 19, 2013
Joshua G: Recommended by two different people at RevZilla when I asked about it. Aug 12, 2013
Shawn K asked: Received my two Klim inserts today and they fit perfectly into my First Gear jackets. Question......which side goes against your back? The ribbed side or the flat side? This may sound like a dumb question, but I just want to make sure I am inserting it correctly!
These inserts are so comfortable and I am glad I got them to replace the foam inserts.
Sep 29, 2013
Answer this · Send to friends Good question? Yes (1) No (0)
Michael J: The air wave is for ventilation so with the waves against your back allows air flow. I had the same debate of when I received mine. its very comfortable. enjoy and I wish you never need it. Oct 1, 2013
Reply to Michael Good answer? Yes (0) No (0)
steve p: I had the same question - so I hope it is not that dumb of a question!
Air wave rib side against my back. Got it.
Mar 30, 2015
Reply to steve Good answer? Yes (0) No (0)
Joseph R: I don't think it really matters all that much but I have mine with the ribbed side against my back Oct 1, 2013
Reply to Joseph Good answer? Yes (0) No (0)
Stuart A. H: IMHO, ribbed side to channel ventilation, also to allow the pad to flex and contour to your body. Oct 1, 2013
Reply to Stuart A. Good answer? Yes (0) No (0)
H Ross R: the rib is against your back to help with air circulation Oct 1, 2013
Reply to H Ross Good answer? Yes (0) No (0)
A shopper asked: Hi,
is this the viper stealth: 11mm or the viper pro 18mm ?
Sep 1, 2011
Answer this · Send to friends Good question? Yes (1) No (0)
Yadba: It is the Viper Pro, size (L)arge. 274mm wide, 444mm tall, and 18mm thick. Full specs at Sep 26, 2011
Reply to Yadba Good answer? Yes (0) No (0)
Scott B: The back pad sold by Klim is a size large D30 Viper Pro. It has molded in markings "EN1621-2 LEVEL 2. VIPER 2 L" on the back. Jul 11, 2015
Reply to Scott Good answer? Yes (0) No (0)
Scott B: Yes, the molded markings on the bottom read "EN1621-2 LEVEL 2. VIPER 2 L" Jul 11, 2015
Reply to Scott Good answer? Yes (0) No (0)
thx1138: OK, I got it and it is indeed the viper pro 18mm !
Good stuff !
Sep 9, 2011
Reply to thx1138 Good answer? Yes (0) No (0)
Frank C asked: Has anyone tried this in an Icon Overlord Prime leather jacket? Would it fit without having to trim it? Oct 14, 2013
Answer this · Send to friends Good question? Yes (1) No (0)
Jonathan B: Yes it will fit. I've tried it in an icon overlord hero prime 2xl, overlord type 1 jacket XL and a dainese super speed jacket 58. No trimming is required. It's also a very comfortable choice. Oct 14, 2013
Reply to Jonathan Good answer? Yes (1) No (0)
Nick V: Not exactly sure about that jacket, but it works with the icon contra without trimming Nov 14, 2013
Reply to Nick Good answer? Yes (1) No (0)
Kyle W asked: Hey there,
How does this compare to the Forcefield armor in protection and flexibility?
Aug 14, 2013
Answer this · Send to friends Good question? Yes (0) No (0)
Edward W: The Klim Viper T5 is the same CE 2 rating as the Forcefield, but it offers more flexibility, similar weight and is less expensive. I find it to be an overall better value and have one in my jacket. Aug 15, 2013
Reply to Edward Good answer? Yes (2) No (0)
DAVID E: I do not have any experience with the Forcefield armour. I am however very satisfied with the T5 Back Protector. I bought it to replace the thin foam pad which came with my First Gear Jacket. If you have seen the OEM pads these jackets come with I need say no more. The T5 is a PROTECTOR not a thin pad. It is a little heavier, not as flexible as the OEM, but it breaths well and I have not had any issues with it at all. I truly do feel better about my safety in a get off with the T5...I made a good choice. I have no reservations recommending this piece of equipment to anyone looking to upgrade to more substantial protection. Aug 17, 2013
Reply to DAVID Good answer? Yes (1) No (0)
robert s: live in south Florida , breathes well, light and flexible, thought it was more comfortable than forcfield in the heat and humidity. Aug 16, 2013
Reply to robert Good answer? Yes (1) No (0)
Randy H: Very flexible and heavy.

The ribs kind of make it softer, as it is pretty spongy in a hi-tech way.

I ended up putting the amour that came with my Klim Latitude Jacket back in because the D30 was so heavy. I hear the D30 that comes with the Latitudes now is thinner, therefore less weight.

But it would be the best amour if a person hit the ground.
Aug 18, 2013
Reply to Randy Good answer? Yes (0) No (0)
Vic B: I put the back protector in the roland sands 3/4 length jacket and found it flexible and easy to trim..(some trimming was required) i am very happy with is not bulky or intrusive. I would highly recommend this product and i believe that kyle will not be disappointed Aug 15, 2013
Reply to Vic Good answer? Yes (0) No (0)
Thomas P: I have not used the Forcefield; however I find the Viper to be quite flexible and feels pretty protective. I would buy the viper again. Aug 16, 2013
Reply to Thomas Good answer? Yes (0) No (0)
Kyle W: Thanks for all the feedback! I think I'll go with this protector! Aug 20, 2013
Reply to Kyle Good answer? Yes (0) No (0)
Jake m: It is amazing. Aug 15, 2013
Reply to Jake Good answer? Yes (0) No (1)
A shopper asked: Can this be cut to fit any size/brand back pocket? Firstgear jackets have small protectors. Mar 29, 2012
Answer this · Send to friends Good question? Yes (0) No (0)
RevZilla: Yes, the Viper T5 D30 Back Protector can be trimmed to fit. You may also be interested in the SAS-TEC back protector as well; it is reportedly easier to trim.

Please note that trimming either of these to fit will void any manufacturers warranties.
Apr 5, 2012
Reply to RevZilla Good answer? Yes (2) No (0)
TwoWheelTom: If you were to use a SHARP utility knife and lay your pattern out on top of the pad, it could be cut to fit. I would first trace your pattern on the back side, as it's smooth and a better writing surface, and then cut accordingly. Jul 12, 2012
Reply to TwoWheelTom Good answer? Yes (1) No (0)
Scott B: Well I bought two Firstgear jackets, a Mesh Tex and an Adventure Mesh, both size medium tall. The movable shoulder and elbow pad pockets were the same size in both jackets but the back pad pockets were different sizes. I was very surprised that the back pad pocket in the Mesh Tex jacket was alot larger than the one in the Adventure Mesh even though the Mesh Tex is a much trimmer jacket. The Viper Pro sold by Klim is a size large D30 product and fit the medium tall Adventure Mesh perfectly. The Mesh Tex will need a size extra large D30 back pad to fill out the back pad pocket properly but Revzilla doesn't carry an extra large D30 back pad that I can find. Jul 11, 2015
Reply to Scott Good answer? Yes (0) No (0)
Peterpq3: Yes, these can be trimmed. You will be surprized however on how well it fits into most jackets. Apr 3, 2013
Reply to Peterpq3 Good answer? Yes (0) No (0)
sxt173: Yes. It is easily cut and should maintain it's protective non-newtonian fluid dynamics. Apr 17, 2012
Reply to sxt173 Good answer? Yes (0) No (0)
rennsport: short answer is you need to trim it to fit, which takes about 5 minutes Jun 18, 2012
Reply to rennsport Good answer? Yes (0) No (0)
MrGreen: Worked in my FirstGear Kathmandu jacket. 2xl May 14, 2012
Reply to MrGreen Good answer? Yes (0) No (0)
A shopper asked: Revitt Sand Pro 1 jacket, is the armor smaller or just right (height and width) for the jacket's back protector slot. From what I understand I can trim the armor to fit without compromising it's structural integrity, is that also correct? Mar 19, 2015
Answer this · Send to friends Good question? Yes (0) No (0)
Glen G: It's just a little too long for my tourmaster, and I needed to trim it. I't is fairly large. Iv'e already crashed landing on my back hard, and on a rock. Bruised the ribs, and displaced a rib where I landed on the rock. I can't imagine what it would have been without armor. My Forcefield armor on the hips, coccyx, and thighs had no pain; it's thicker armor, and I felt nothing in those areas. Hard to tell if I would have had the Forcefield back armor would have been more cushion on the back? I know for sure without this high rated armor, I believe there would have been more damage. And, yes you can trim the armor to fit. Mar 26, 2015
Reply to Glen Good answer? Yes (0) No (0)
Eric S: I have an alpine city collection jacket and the pocket is wider that this protector, it shifts a little left to right but not enough to be of concern. May 1, 2015
Reply to Eric Good answer? Yes (0) No (0)
Juan T: I didn't have to trim it for my icon jacket but it should be fine. Interesting substance this stuff. Mar 19, 2015
Reply to Juan Good answer? Yes (0) No (0)
Mark T: It fit snug in my Cortech GX Sport Air 3.0, Mesh Jacket May 5, 2015
Reply to Mark Good answer? Yes (0) No (0)
Edward C asked: I have a Dainese Frazier size 54 and was wondering would this fit without trimming? Sep 19, 2014
Answer this · Send to friends Good question? Yes (0) No (0)
H Ross R: I purchased the Viper and easily trimmed it to fit my First Gear jacket. You can use normal wood working tools if you first put it in the refrigerator or better yet the freezer. Sorry no experience with Dainese. Oct 1, 2014
Reply to H Ross Good answer? Yes (0) No (0)
Edward C: Ordered it for my Dainese Frazier jacket size 54 and fit perfectly no trimming needed I also tried it in my Dainese Avro textile size 54 and also fit. Oct 2, 2014
Reply to Edward Good answer? Yes (0) No (0)
Peter S: I had to trim it to fit Dainese Oct 6, 2014
Reply to Peter Good answer? Yes (0) No (0)
Jose L U: I don't know, I used it with a cycleport jacket. Oct 1, 2014
Reply to Jose L Good answer? Yes (0) No (2)
A shopper asked: Will this back protector work with the Firstgear Mesh Tex Jacket? Sep 30, 2013
Answer this · Send to friends Good question? Yes (0) No (0)
Scott B: I just received a medium tall Firstgear Mesh Tex and the Klim back pad, a D30 Viper Pro size large, is smaller than the pack pad pocket. I think an extra large D30 Viper Pro would fill out the pad pocket completely and I will be ordering one. You need to measure your back pad pocket. I also got a medium tall Firstgear Adventure Mesh and the back pad pocket is smaller so the large D30 Viper Pro fits perfectly. Jul 11, 2015
Reply to Scott Good answer? Yes (0) No (0)
Vic B: I don't know. The boys at revzilla can tell you. I did trim the back protector with scissors to fit the roland sands 3/4 length jacket and it was very easy to do. It is also comfortable without being bulky. Hope this helps Oct 1, 2013
Reply to Vic Good answer? Yes (0) No (0)
Stuart A. H: I had to cut out and sew or glue in a new pocket for my mesh tex jackets. The pad doesn't fit in the long narrow Firstgear pocket (unless they updated their pocket in the past year). Oct 1, 2013
Reply to Stuart A. Good answer? Yes (0) No (0)
Craig C: I have a brand new Firstgear Mesh Tex jacket and this back protector fit in just fine. Oct 12, 2013
Reply to Craig Good answer? Yes (0) No (0)
A shopper asked: Does the wave pattern go against your back for airflow, or away from your back to allow better flexibility? May 7, 2013
Answer this · Send to friends Good question? Yes (0) No (0)
RevZilla: The wave patterns lies against your back to provide more airflow. That said, this insert is still one of our more flexible back inserts all around. May 16, 2013
Reply to RevZilla Good answer? Yes (1) No (0)
Anthony s: I just bought a Klim jacket and they insert this same protector into their jacket with the wavy part facing inwards towards your back. I'm sure it helps airflow too. May 27, 2013
Reply to Anthony Good answer? Yes (0) No (0)
Thomas J: Ditto - I just received my protector and have the wave patterns against my back. Otherwise, if it was outside, it would not allow as much airflow. Aug 28, 2013
Reply to Thomas Good answer? Yes (0) No (0)
Daniel C: I use the wave pattern against my back, but I'm not sure it makes a lot of difference. May 9, 2013
Reply to Daniel Good answer? Yes (0) No (0)
A shopper asked: I am looking to replace the back armor in my Phoenix 4 Jacket with the d3o armor. It seems to be more flexible. Is this true? Are there any fitment problems. Thank you for your time Oct 9, 2012
Answer this · Send to friends Good question? Yes (0) No (0)
Frank83: Very flexible when it needs to be. It firms up instantly upon impact. It kinda feels like a thick slice of well done steak. It is a little stiffer when it gets down below 35 degrees F and gets softer as it gets warmer. Jan 24, 2013
Reply to Frank83 Good answer? Yes (0) No (0)
Peterpq3: I think it would fit fine. It is extremely flexible and has an almost "not there" feel to it. If it is too big, you can trim it, but it fits into my jackets fine. Apr 3, 2013
Reply to Peterpq3 Good answer? Yes (0) No (0)
RevZilla: No, the Jo Rocket Phoenix Jacket will not accept a Klim Viper T5 Pro D3O Back Protector, only a SAS-TEC, or a Knox TP2 Advance X Back Protectors. Oct 10, 2012
Reply to RevZilla Good answer? Yes (0) No (0)
A shopper asked: Would this protector fit into a transition #2 jacket from tourmaster without trimming? (Size XL) Apr 29, 2012
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Donald R.: No.
But it can easily be trimmed, and I trimmed mine to be larger than the OEM "pad" in my transition 2, which is a plus. I used kitchen shears, but heavy duty scissors should do the trick. It's not particularly pretty, but nobody's going to see it anyway.
Jan 30, 2013
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Thomas J: I trimmed a bit off the top but I have a medium size jacket - nt sure if that makes a difference or not. Aug 28, 2013
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RevZilla: Yes, Klim Viper T5 D30 Back Protector will be compatible with the Tour Master Transition 2 jacket. May 4, 2012
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A shopper asked: What are the Dimensions on This Item ? I Ask because I know that D30 is some pretty high tech armor and am wondering if I can fit this in the pocket on my current riding jacket which is not made by Klim. This looks like it could be a VERY nice and reasonably priced upgrade to a number of jackets that come with lower level PE padding Aug 27, 2011
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sxt173: I will have to measure when I get home, but it is easily cut to fit any pocket. Due to it's use of non-newtonian foam/fluid, cutting it will not lessen it's protection, although larger is always more protective. Apr 17, 2012
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Chris K: This protector is 17" Tall by 11" at widest point, however, the material is easily trimmed to fit, if you need to make it smaller. Sep 9, 2011
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Yadba: 274mm wide X 444mm tall X 18mm thick. Full specs at Sep 26, 2011
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A S asked: Will this fit in a Joe Rocket Reactor 3.0? I like the jacket, but I feel like it could use some back protection. May 21, 2015
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A S: I went ahead and ordered both, and it was a perfect fit. I would definitely recommend this jacket/armor combination. May 27, 2015
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Mark S: I used it in a AGV SPORT SNIPER JACKET and it works great, just cut to fit. Jun 19, 2015
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Rafael C asked: Recently purchased the AGV Sport Women's Xena Mesh Jacket for my wife and I'm wondering if I could replace the foam back protector with this one? I have exactly the same on my alpine stars t-jaws and I love it but I tried on the AGV and it's a bit bigger .. Do you guys have a smaller size? her jacket is size small. Pleases let me know. Jul 30, 2014
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Doug H: There are numerous sizes in the D3O back armor. First thing I'd do is take hers out and measure it. Then search for different sizes. Unfortunately many retailers only sell one or two sides. You can always trim them a little bit if you need to. Jul 30, 2014
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David G: It fit great in an AStars small Vika jacket that my fiance wears. Can't speak to the AGV, but the Vika is really small and form fitting, and this back protector was perfect for it. Sep 7, 2014
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Jeff L asked: Will this fit Alpinestars mesh jackets like the T-GP R or T-GP air? Thanks in advance! May 12, 2014
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Mark G: As long as its relatively the same shape, you can always use your existing back protector as a template and trim to fit. no problem!!!!!! May 12, 2014
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Peter H: Agreed - it's easy to trim. Jun 26, 2014
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Robert C asked: Will this fit on the Alpinestars Celer Leather Jacket, GP Plus R leather Jacket, and other jackets by Alpinestars?

If it's any easier, which jackets will it NOT fit/ is it not recommended?
Aug 8, 2015
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Thierry P: I could only say it does fit in the Alpinestar Kilimanjaro jacket (Medium size). Sep 15, 2015
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A shopper asked: Has anyone tried this in an Aerostoch Transit jacket? Apr 2, 2014
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Kurt H: Sorry no, I don't have an aerostitch jacket, but it fits well in my Dainese! Apr 2, 2014
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Luke M asked: Would this fit a size 50 Alpinestars Jaws perforated jacket comfortably? Would it require cutting?
Mar 7, 2014
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Chris L: It will fit any of the built-in spine protector pockets. Unless the jacket is very fitted it may move around. I'd recommend fitting it first and adding a couple stitches through the liner to keep it in place. Very light and CE-Level 2. Apr 24, 2014
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A shopper asked: What's the difference between the Klim and Icon d30 back inserts? Is it different levels (Klim is CE 2, Icon CE 1?). This is not specified for the Icon, although the Klim item description specifies CE level 2. Can you please clarify?

Icon link:
Apr 8, 2013
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Joshua B: this one (Klim) is CE 2 and 18mm thick, the Icon is CE 1 and 11mm thick. both have same LxW.

it's ridiculously comfy, by the way.
Apr 11, 2013
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Alainna W asked: While I understand that trimming the protector voids the warranty, does trimming it affect the protection? Is it still CE2 armor if it is modified? Apr 10, 2014
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Michael Z: I don't have extensive knowledge about what the CE levels measure, but my understanding is it just measures how much impact will be reduced from impact. If you base it off of that understanding than trimming wont affect the CE2 level, but only the area of coverage. So as long as you're not cutting it in half and just trimming the outside to make it fit in the jacket you'll be good to go. Ps: this back protector is awesome :) Apr 15, 2014
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Bruce P: All of the above answers are well thought out about this product and this is the only back protector I prefer. With all that has been said.... yes, trim carefully for your fit. After all, I would much rather have a trimmed back protector inside my jacket than NO Back Protector at all! May 2, 2014
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John H: I think Michael is technically correct. However, the idea of all armor is to spread the energy from an impact across a wider area. The more you cut, the less area there is to absorb the energy. I'd cut very carefully and cut the absolute minimum in order to get it to fit. Apr 22, 2014
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Chris L: Having owned most of the spine protectors on the market I would say this is already the smallest option (other than those unprotective-junk HD foam options). Don't know why you'd need to trim it. Apr 24, 2014
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Product Style RevZilla Item # Manufacturer Product # Availability
Klim D3O Viper T5 Pro Back Protector 797931 5174-001-000-400 In Stock: Ships within 24 hours