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The Forcefield Back Protector Pro Sub 4 is the worlds first Motorcycle back protector to transmit less than 4kn when subjected to the standard CE test.
The Pro Sub 4 has been specifically designed to test at under 4kn when subjected to the standard CE test EN1621-2. Independent testing by SATRA shows a mean test result of 3.38kn transmitted energy, making it the first motorcycle back protector in the world to attain this level of performance. Constructed with a removable and washable outer cover to give the rider the ability to keep the back protector clean and hygienic , it also makes the protector more flexible as it is not bonded at the edges, this in turn makes it more comfortable to wear, a prime consideration in the design process of any Forcefield product. As with all Forcefield Body Armour® the Pro Sub 4 has RPT (Repeat Performance Technology) ensuring continued and consistent protection even after multiple impacts.
The World's first Motorcycle back protector to transmit less than 4kn when subjected to the CE test EN1621-2 (Level 2)
Have a functionality, fit, or otherwise product-specific question about the Forcefield Back Protector Pro Sub 4? Ask it here!
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Alexander N W: Wanted to try a new back protector plus it was on sale.Feb 14, 2015
Rafael D: After researching for a long time I decided for this back protector because it really seen the best one around. Now is just wait to comprove or have a disappointment. But I'm really confident that I make the right choiceFeb 6, 2015
Tyler E: "The best protection you can get. And, it breathes well and conforms to your body."Dec 16, 2014
A B: It seemed silly to buy an intermediate or less expensive back protector when spine safety is the issue. I reviewed the specs on a range of protectors and this clearly is the best on the market. As far as I can tell a no-brainer.Dec 6, 2014
Tom M: I am a dad now and was looking for the best protection I could get.Nov 24, 2014
Richard M: After careful review and extensive research the "Forcefield Back Protector Pro Sub 4" simply offered the highest level of protection through unparalleled shock absorption and energy disbursement. Although a bit more cumbersome than the insert version, it's a trade off I can live with!Nov 24, 2014
Harry S: Recommendation of trusted and very experienced friend, along with very high ratings in numerous reviews and surveys.Sep 22, 2014
manuel s: Safety and quality. Haven't been disappointed. Great product.Aug 8, 2014
Wilfred F: It costs alot so it should do a better job than a cheap back protector....... right?May 28, 2014
Sunbir W: After a lot of research, found this to offer the best protection that is available in the market for the back and spineApr 15, 2014
"" ": Safest back protector on the marketFeb 16, 2014
JUAN R: ItÂ´s suposed to be the best back protector.Feb 14, 2014
Jeff R: It's the best body armor made! Since you carry almost all of the Forcefield line of products, may I recommend that you take a look at carrying just a few of their other items for snow sports too? I am talking about the Board Shorts (tinyurl . com/kknpfgt), Knee Protectors (tinyurl . com/lrqhxz7), and Boom Shorts (tinyurl . com/omdsz83). Trust me. There's a market for it. I had to order shorts and knee guards from England, but would rather have paid you! Thanks!Dec 31, 2013
Mark M: Had a wreck & broke my back in 4 places. I was wearing a jacket with a CE approved spine protector. Had I been wearing this I would not have spent six weeks in hospital & not have had to learn to walk all over again. This is CHEAP INSURANCE! It is also comfortable & you forget you are wearing it. Don't be so COOL it kills you.Dec 17, 2013
John L: How could I not choose Forcefield for my spine protection. All it takes is for one fall and without the proper protection and you just can't take it back, This product screams safety fits well right out of the box, I highly support all forcefield for making the best safety products on the market.Oct 2, 2013
Athena M: I love Forcefield and did a lot of research before purchasing this. It is quite thick but very light and comfortable. Great protection but too thick under the tight fitting kangaroo suit, switched to the ladies Pro Sub 4 (which was not available when I purchased this).Sep 26, 2013
A shopper asked:How thick is this back protector? I have read in numerous reviews that you need to account for the extra room beneath your riding gear. How much extra room are we talking here? I currently have a Dainese Thorax Wave Pro (too big for me, and smaller size is unavailable). Would it take up a similar amount of room?May 20, 2014
Andrew D:It's about an inch and a half thick. Unless you have a rather baggy jacket you're going to be able to see a large hump on your back with it on. With my street and steel jack size large it's pretty noticible but with my spidi leather jacket it's better. I'm about 6'2" and ordered the large and it comes down to the bottom of my tailbone which I like. I've never tried on the Dainese protector you're talking about so I can't really compare. It is rather flexible, much more than any hard shell protector. The only loss of comfort is the space it takes up. I bought it to use while stunting in a parking lot. I rarely wear it under a jacket. What I do is wear the alpinestars bionic mesh jacket with their back protector swapped for the sub4, some elbow pads, and wear a mx jersey over everything. It's great when it's hot out. Overall I'm very happy with it and I'd say if you're willing to sacrifice a moderate amount of room under the jacket for superior protection then I would buy it. Hope this helpedMay 20, 2014
Thiago M:The protector is around one inch thick. You do have to account for the extra room, but it's not so bad. In fact I wear it with jackets that have other forcefield inserts just as thick, so around 2 inches total. As both the jacket's and the vest are fairly flexible, it doesn't bother me much, even if quite thick.May 25, 2014
John L:Yes the Forcefield Back Protector Pro Sub 4 is slightly thicker, I had to remove the back pad that came with my suit and fits perfect. Since you suit is a little big this will help with fitting. in addition I added the Forcefield amor shorts for complete protection. Hope this helped you with making a choice.May 20, 2014
Nick S:Based on a quick measurement, I estimate about 1.5" thick. My suit used to be too loose in the stomach and back, but with the back and chest protectors, it fills out. This is actually a good thing...May 21, 2014
Tim F asked:Hey. I'm just under of 5 11", 32" waist, 178lbs. I took the torso measurment as advised by forcefield and keep coming up 21-22". I'm usually a medium in everything and the 22" puts me into an XL. Would you think the L would do it? thanks. timAug 18, 2013
Mary R:I'm not sure why this thing says my name is Mary, but whatever. I'm personally 5'9", 160 lbs, and about a 31 inch waist and I ordered a medium and it fits but it may be a hair too small. But it's so close that a large would have been too long. Best thing I can tell you to do is order a large because that should work for you as put it on with the gear you plan to wear with it, helmet too. The back protector should cover your tailbone with the tip, all the way up to your neck pretty much. Should be about an inch of space between the top of the back protector and your helmet. Make sure it's not bunched up or caught on your gear too as that would give you an inaccurate idea of how it fits. If its too short, go up to an XL if its way too long (doubtful) go down a size. Most likely though, I'd guess a large would do you. But it's worth it to send it back if its not right because the more uncomfortable it is, the more likely you are to not wear it or become distracted while riding. Hope that helps!Aug 19, 2013
Michael C:Hi Tim, don't know if large or extra will work best. I bought one earlier this year for racing and bought an extra large. I'm 6'1, 180 pounds, and have a 32 to 34 waist. I have an athletic build. Works under my leathers great. Would buy again if ever needed. Excellent product. Hope this helps some. Good luck. MikeAug 21, 2013
James H:Tim, I couldn't tell you for sure. Bought mine for racing last year and honestly never had a chance to try it. Sorry couldn't help you out. Anthony's reviews are usually very helpful in making decisions on size. Plus, their return policy is awesome if you are not satisfied.Aug 20, 2013
Peter CStaff:Hey Tim. Yes, I think the L would do it for you. I'm 6', 34" waist, 195lb and bought the XL based on their measurements. I think I'm going to actually sell the one I got and buy get the L when I have a chance. Hope that helps!Aug 19, 2013
Mike B:Hey Tim, I'm 6" and just shy of 215 pounds. I wear a large and it covers my spine just perfectly. I think the Large would suit you too and the XL would be too much. Hope that helps. MikeSep 1, 2013
Looking at the Pro Sub 4, trying to determin the right size. I am 5'11" or 6 foot depending on the day and the ruler, I am thin though which affects the waste straps. 34" waist. According to the size chart I would probably be at the edge of medium and the beginning of large. My instinct is to go for the longer large but I am concerned the straps will be too stout. What do ya' think?
med23:I am 6'2" and 210 pounds. I use the large ProSub4 and it is perfect. I would think that the medium might be better for your height and thin build as you described. My only reservation would be if you have a very long torso...in which case you might need the extra length of the large. The straps on the large also might give you too much material and be a bit sloppy under your suit. They gave a lot of material for a huge spectrum of torsos, which you don't need to worry about. Go Medium...and Revzilla is amazing at return/exchanges so you can't go wrong.Jul 16, 2011
I am 5'10" about 180 lbs with a 32" waist and I got the large. It actually was barely a bit to big for me but the straps have tons of velcro that you can tighten it with. The length on my back was just a bit long but I would take longer over shorter any day of the week. The back protector also fit very well under my leathers and didn't cause any discomfort while riding on the track. It also provided excellent protection when I high sided at around 80mph.
Blonderhanz:I'm 6'0" at around 195 with a waist around 36-37". I just got the large Sub 4. As far as fitting the length of my spine, it is perfect. But you are concerned about the waist strap. The strap is long, even for me, and I may have to someday have it shortened. With your smaller waist the large's waist strap will be way to big, try the medium, or modify the waist belt on the large.Sep 28, 2011
freepers:I had a similar conundrum. I choose the large size as for my sub 4 back protector. I went the smaller direction due to similar circumstances for my previous back protector and in retrospect should have gone the larger size.
Get someone to take three or four measurements, then average them. This will give you the best fit.
I'm not sure if you made the decision yet, but I wear 36" waist pants and I just purchased the large. They are a little loose for my taste, so I'd recommend you go with the medium. If I had both side by side to try on, I probably would have purchased the medium.
MrDsylexia:I too was between sizes but as Anthony in the videos always says, "if you are between sizes, go for the next one up". The Large protector fits me perfectly. I am also 5'11/6' and 38 waist, it fits fine and has a lot of room to spare/ great adjustability.Nov 17, 2012
Tyler E:In terms of thickness and impact absorption, no; however, the Forcefield chest protector is more than enough. It is still thicker than most and made up of the same layering of composites and it lets the air pass through to your chest. I do not feel ready to ride unless I am wearing the Pro Sub-4 and the chest protector. Make sure everything fits under your leathers. I got measured up for a set of custom leathers with my chest and back protector on and I am so glad that I did. While the back protector or chest protector might fit under your existing leathers, together, they are unlikely to fit unless you leather are too big. otherwise.May 15, 2014
Tyler E:This is an excellent product; however, it does add quite a bit of volume to the body. Whether it fits depends upon how tight/loose your jacket and pants are. I wear my back protector (and a Forcefield chest protector) under a two-piece suit that was made to measure; the additional volume of this equipment is such that I took my measurements with the gear on, adding inches to my circumference. I have an off-the-rack one-piece race suit that is a snug fit and thus this set-up (even without the chest protector) does not fit in that suit.Oct 16, 2014
I wear my back protector (and a Forcefield chest protector) under a leather AGV Sport jacket with the jacket's original back pad removed. The tail piece of the back protector protrudes out of the jacket, but I'm not a big fashion guy, so it doesn't bother me. I'd rather be protected.
The setup does occupy additional space inside the jacket, but I'm still comfortable. So, I guess it depends on how snugly your suit fits to start with.Sep 27, 2014
Benjamin K asked:I currently use an older Technic/Knox full back protector, but it is 10 years old and of the one shot variety. I am very impressed with the specs on the L4 unit and the fact that taking a hit will not deplete from its ability to take another impact at the same point. However, it seems to be made out of a rubbery material and I am wondering how long it's good for until it starts decomposing? Is there a warranty?Feb 25, 2014
Kenneth H:Hi! I do not know if any warranty? I have one and like it, not sure now how long I had it - I guess about 2 years or so. It is very good and seem to me will last many years! I live where it gets to around 45 C or 120 F in the summer! I have no problems with the sub4 and ware it when every I ride my bikes. both on and off the road.
Yes, expensive, but I believe will be happy with it over the short and long run - I am! Oh! If tight jacket - will need to get a bigger size with the sub4. Enjoy! Mr HMar 2, 2014