The SuperATV Can-Am Defender HD5 Frame Stiffener reinforces the frame's weak points and A-arm mounts on the Defender HD5 and HD5 DPS. It is made from 4.5 mm steel plate and is the support you want before adding a lift, portal gear lift or bigger tires that put extra leverage on the chassis.
Choose the front stiffener for 2017+ Defender HD5 machines or the rear stiffener for 2017-2021 models. Both are powder coated to resist corrosion in year-round use and add rigidity without unnecessary bulk.
Running portals? Pair this stiffener with the SuperATV Can-Am Defender HD5 4" Portal Gear Lift.
Key Features
- Strengthens weak spots on the Defender HD5 frame
- Reinforces A-arm mounting points
- Built for lifts, portals and bigger tires
- 4.5 mm heavy-duty steel plate
- Powder coated for durability
- Front and rear versions available
Built To Solve: Frame Flex and Mount Fatigue on the Can-Am Defender HD5
- Frame stress after adding a lift, portals or larger tires
- A-arm mounts fatiguing under extra leverage
- Chassis flex when carrying heavy loads
- Frame damage from hard trail use
Best For: Defender HD5 Owners Adding Lifts, Portals or Big Tires
- Defender HD5 and HD5 DPS owners
- Owners installing a portal gear lift or big lift kit
- Work machines that carry heavy loads
- Owners of other Defender models should choose the stiffener listed for their HD size
Specifications
- Material: 4.5 mm steel plate
- Finish: powder coat
- Front version: 2017+
- Rear version: 2017-2021
- Manufacturer Part Numbers: FS-CA-DEF-01#AA (front), RFS-CA-DEF-01#AA (rear)
Fitment
- Can-Am Defender HD5 (2017+)
- Can-Am Defender HD5 DPS (2017+)
The rear stiffener is listed for 2017-2021 machines; the front stiffener is listed for 2017+.
Fitment is not guaranteed on models, trims or years not listed above, or on machines with modified chassis or aftermarket parts in the way; confirm your exact model before ordering.
FAQ
Why does a Defender HD5 need a frame stiffener?
Lifts, bigger tires and portals increase leverage on suspension mounts; the stiffener reinforces those stress points to reduce flex.
Should I buy the front or rear stiffener?
SuperATV offers both. The front fits 2017+ HD5 models and the rear is listed for 2017-2021.
What is it made of?
It is made from 4.5 mm steel plate with a powder-coated finish.
Do I need one if I am adding portals?
SuperATV recommends it when adding portals, big lifts or bigger tires.
Is it hard to install?
SuperATV publishes official install instructions for the front and rear stiffeners; follow them and torque all hardware to spec.
Does this fit other Defender models?
This listing is for the HD5. SuperATV sells separate stiffeners for other Defender sizes.
Why SuperATV
SuperATV designs, tests and builds its UTV parts in-house and backs this part with a 1-year limited warranty against manufacturing defects. Dunes 2 Dezert SXS ships SuperATV parts nationwide, so you get vehicle-specific fitment without hunting across sites.
Strengthen Your Defender HD5 Before You Upgrade
Pick the front, rear or both stiffeners for your Defender HD5, and install them before or alongside a portal gear lift, lift kit or larger tires. Check the year range for the rear stiffener before ordering.
