Can-Am Defender Rear Chassis Stiffener by Thumper Fab
Can-Am Defender Rear Chassis Stiffener by Thumper Fab
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Can-Am Defender Rear Chassis Stiffener by Thumper Fab

Does your Can-Am Defender need a little more “oomph”? Introducing the Defender Rear Chassis Stiffener from Thumper Fab, and believe us when we say you won’t look back! This amazing frame stiffener will add extra reinforcement to your ride for larger wheels, oversized tires, lifts and portals. Winning never felt so good.

You, my friend, can rest assured that you are getting the best hard-shell engineering on the market when it comes to this frame stiffener. Thumper Fab goes above and beyond, and designed the most robust kit around – because if it’s going on YOUR vehicle, it had better be strong! Not to mention that this kit is also the easiest one to install – you really don’t even have to be a top mechanic to get it done in no time at all.

Roll through those trails in rugged ease – without compromising your sanity at the same time! With the Bolt-on Frame Stiffeners from Thumper Fab you have succeeded in equipping your Can-Am defender with superior stability and control - because nothing less than best is what goes on our cars. Get ready for an unbeatable ride experience with this frame stiffener for your beloved off-roader. 

Computer Aided Design: Thumper Fab has spent countless hours and multiple prototype revisions to make sure they have developed a kit that will greatly increase strength for your control arm mounts and chassis subframe. They designed the frame stiffener / gusset kit to reinforce weak links and to work with your OEM or Aftermarket Control Arms and Lift Kits with same model year fitment. Using the latest technology in 3D scanning and computer modeling software, all aspects of the suspension and chassis geometry have been verified for precision fitment.


Standard Benefits:

  • Excellent for BIG lifted Defenders with oversized tires for control arm tab mount strength
  • Braces the weakest points on the rear chassis
  • HD powder coated for long lasting protection and to prevent corrosion
  • Made in the USA from premium steel
  • Offered through EVP in black powder coat only


EVP NOTE: For different Thumper Fab upgrade/add-on options, please call (855)387-8863 direct to place your order. 


*Please allow 3-4 weeks for order processing and delivery.




This product is exempt from the emission standards and related requirements of 40 C.F.R. § 1051 as provided by 40 C.F.R. § 1051.620, and California law [e.g., vehicle code§§ 27156 and 38391]. This product is sold only for use in connection with EPA -certified, purpose-built, nonroad vehicles used solely for closed course, nonroad competition/racing and not used for any recreational purpose or on public highways or right of ways maintained by and open to the public. This product is sold only in connection with machines that do not fall under state and/or federal noise or emission standards/regulations. Purchasers who/that purchase this product represent and warrant that the product is purchased only in connection with EPA -certified, emission-regulations-exempt and noise-regulations-exempt competition/racing vehicles as interpreted under applicable state and/or federal law. Questions: Call Evolution Powersports at (715) 247-3862.
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