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SIDI Crossfire SRS Boots
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SIDI Crossfire SRS Boots Videos

SR Sole: The Sidi SR, or “sole replacement system”, sole is the markets only sole fully replaceable via a standard screw driver and the SR quarter turn screws. This patented sole replacement system has the extra technical feature of being able to better distribute loads from the footpeg fully across the sole. While the SR sole has a stiffer feel than the TA sole (or other companies sewn on soles) it has the added benefit of presenting a smaller footprint than traditional sewn on soles thus offering less of a “target” during on track encounters or hidden stumps in the brush.

Dual Flex System: Allows for easy movement forward and backward but is extremely strong side to side giving the rider the finest in ankle protection and long lasting comfort. The hinged, dual position, stitch-free upper is constructed from injection-molded plastic. With the exclusive Dual Flex system and the four floating, independent straps the Crossfire can provide each rider with a personal fit no matter his body shape or if he uses knee braces or not.

Adjustable Calf System: Sidi’s exclusive, patented, adjustable calf system allows the rider to adjust the diameter of the Crossfire boot at the calf. This system, along with longer upper straps, allows the Crossfire boot to accommodate riders with larger calves easier than any other boot now available. The Crossfire can accommodate riders with up to a 22-inch calf diameter 14 inches above from the bottom of their heel. The inner plastic plate is made of two different materials; a rigid one to support the boot and a heat resistant one to protect the rider’s leg from exhaust heat. All components of this system are fully replaceable and are available in a wide variety of colors.

Heel Detail: Three extended ribs are featured at the back of the boot to assist the rider in making upshifts with his heel when starting a race. Rigid, shock resistant, anatomically shaped heel for maximum protection.

Non-Bootie Designs: Sidi boots do not incorporate inner booties into their design, and for good reason. Booties make the design larger and cumbersome; add to the boot’s thickness, which interferes with shifting, plus the inner booties retain body heat affecting the rider’s performance and comfort.

Buckles: Sidi’s exclusive cam-lock buckle system is acknowledged as the finest system on the planet. It must be as most of Sidi’s competitors have attempted to copy various aspects of it. The cam-lock buckle system incorporates a strap memory retention system. Adjust the straps once and they will be at the same position for every ride after that!

Toe Areas: The tip of the toe on the Crossfire boots are covered with plastic to protect the base material and seems against abrasion from brush etc. Plastic shift and brake lever guards on the top of each foot area.

Heat Shields: Each Sidi boot is equipped with an anti-heat undressed leather protection panel at the same height of most motorcycle’s exhaust heat shields.

Composite Insole: A cushioned liner is provided that can be removed if the rider desires a more roomy fit. Sidi does not use steel shanks riveted to its insole like most manufactures, details such as this enable Sidi boots to enjoy a multi year service life versus the competitors multi month lifespan as over time, a steel shank can deteriorate, rust and fracture exposing the rider to injury.

Lorica®: Outer is fully constructed with Lorica a composite micro fiber material created from strands less than one thousandth the thickness of silk. When injected with special resins, these fibers act like natural leather skin, but with the addition of better strength, softer texture, lighter weight and better moisture protection.

Lining: Cambrelle is a lining that, due to its particular polyimide structure, guarantees a rapid drying rate after the boot gets wet or sweaty. This prevents the onset of mold forming which extends the boots lifespan dramatically. The Teflon treated mesh panels in the rear calf area of the boot allow humidity to escape while the boot is in use.

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Sidi Crossfire SRS Boots 5 5 6 6
Great fit and performance! Great fitting boot. I am and 8 1/2 and ordered a size 42. It fit snug but molded to my foot after the first ride. Very good fit around the ankle. Fits better than any other boot I have had because I usually have to order a 9 as most other boots do not come in an 8 1/2. These boots have the best buckle system that I have seen. They also work well with Astrisk knee braces. Revzilla gave a great price and fast shipping! December 23, 2013
Great Boots I went back and forth on this purchase. They are expensive boots, but after they came in the mail I couldn't be happier. The hinged ankle makes them much easier to move in and they really didn't need any break in. Foot is slightly narrow, but after my foot heated them up I found them very comfortable. I wear a US Size 10 and I purchased a size 44. Protection is top notch. Revzilla delivered quickly as usual. August 26, 2013
Best protection As mentioned in almost all Crossfire reviews, these boots run on the narrow side. Removing the insole does provide a little more room but if you have a wide foot, it may not be enough. My Crossfire's seemed tight & stiff at first, but proved to break in and feel comfortable on the first ride. These boots replaced my old Force Flex boots and are definitely more comfortable and even more protective. Highly recommended if you're looking for about the highest level of protection and dont mind the cost. May 25, 2012
Sturdy and Protective I needed a strong, stiff boot to support my recently broken foot and after a fair amount of research (along with a couple of calls to Revzilla) I decided on Sidi's Crossfire SRS MX boots. I could not be happier. The footbed is STIFF and does the job of keeping my forefoot from flexing all while supplying adequate feedback through the pegs. Walking is admittedly not these boots strong suit, but they are perfect on the pegs. The dual hinge system really works and the boots only took a couple of rides to break in nicely. Sizing: I wear a Euro 45 in Dainese and a 45 in Sidi fits just right. They feel a more bit narrow, but you can remove the insole to free up some room if you like. Highly recommended if you need or want the heightened protection. Thanks Revzilla. April 23, 2011
SIDI SRS BOOTS These boots are just fantastic, light but super strong. The most comfortable boots I have worn. The new colors are also very cool! August 11, 2010
SIDI Crossfire SRS These boots are a wonderful fit. They are light and strong and superbly made. August 9, 2010
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Use our Product Q&A for a chance to win our monthly $100 giveaways.

Have a functionality, fit, or otherwise product-specific question about the SIDI Crossfire SRS Boots? Ask it here! If you have a customer service or shipping question, please direct it to our Customer Service department.

SIDI Crossfire SRS Boots
Already Asked: 2 Questions, 4 Answers
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RevZilla Store asked: Why did you choose this?
MICHAEL E: These are the best boot made, and I know my size. They are not the latest model, but probably just as good. And the price is right. Dec 12, 2013
Adam O: Best MX boots ever! I upgraded just in time. My first two rides in these boots and I firmly believe that my foot didn't break because of these boots. The hinged ankle makes them easy to walk in (for MX boots) and they are comfortable all day long on my DS rides. They are pricey, but I would buy them again. Nov 18, 2013
A shopper asked: Wher can I order or see the different soles that are available for this boot? Aug 20, 2012
Answer this · Send to friends Good question? Yes (0) No (0)
GregH: The soles are like their motocross racing boot. Not a great deal of traction in anything other than dry conditions. If you find yourself in a enduro-type mud bog, you will have a hard time walking out. Sep 4, 2012
Reply to GregH Good answer? Yes (0) No (0)
RevZilla: Inventory for the replacement soles is limited in the United States. If available, we can special order them for you. If interested, give us a call at 877-792-9455. Aug 27, 2012
Reply to RevZilla Good answer? Yes (0) No (0)

Mens and Womens Footwear

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EURO US MensUS Womens

Sizing information is provided by the manufacturer and does not guarantee a perfect fit.

Click here to see the full SIDI Boots Size Chart
Product Style RevZilla SKU ID Manufacturer Product # Availability
White / 7.5/41 475175 8117732060102 Out of Stock
White / 8.5/42 475176 8117732070101 Out of Stock
White / 9.5/43 475177 8117732080100 Out of Stock
White / 10/44 475178 8117732100105 Out of Stock
White / 11/45 475179 8117732120103 Out of Stock
White / 11.5/46 475180 8117732130102 Out of Stock
White / 12.5/47 475181 8117732140101 Out of Stock
White / 13/48 475182 8117732150100 Out of Stock