Why You’ll Love It
6” Portal Lift adds ground clearance directly at the hubs 30%, 45%, or 60% Gear Reduction adds torque and relieves drivetrain stress Selectable Idler Setup lets you choose dual- or single-idler gearing Cast or Billet Housings let you choose the construction that fits your build Limited Lifetime Warranty protects your purchase
Enhance Your Defender HD11 with GDP Portals
Looking to get more out of your Can-Am Defender HD11? SuperATV’s 6” Portal Gear Lift gives you 6” of lift and built-in gear reduction for extra torque, better clearance, and the ability to run bigger tires without stressing your ride. You can pick 30%, 45%, or 60% gear reduction depending on how you like to ride, and if you want it really tough, go with the billet aluminum housing over cast housing. For maximum strength upgrade to our dual idler configuration.
What Is a Dual Idler?
We’ve spent years perfecting our dual idler gear portals. Adding a second idler gear spreads the load over more surface area, giving you more reliable torque and a super-strong gear set. But it’s all about fit—so we precision grind every gear from 9310 steel for perfect mesh.
Tackle Tough Trails
Choosing the right gear reduction is the most important thing when getting portals. A 30% gear reduction gives you faster speeds and solid torque, while a 45% reduction is perfect for bigger tires and tough trails, giving you the extra power and control to dominate any terrain. Create the ultimate mud powerhouse with a 60% reduction in gearing, and unleash extra force with dual idler gears.
No Stress on Your Drivetrain
GDP Portals shift gear reduction to the wheel hubs, taking the pressure off your Defender HD11’s drivetrain. Less strain on your axles, driveshaft, differential, and transmission means less wear and fewer expensive repairs down the road.
Strength that Can’t Be Beat
Our GDP Portals are built to take a beating. You can choose from cast or billet aluminum housing with rugged 5/16” steel alloy backing plates. Ready for abuse and backed by a lifetime warranty, they’re engineered to last.
Our housings are reinforced for gear retention and optimized for oil flow
Advanced steel alloy backing plates are stronger than chromoly
Enhance with Portal Blood—gear oil formulated for GDP Portals
There are no gimmicks and no vents because vents do more harm than good—we know because we tested them
Advanced Gaskets, Seals, and Bearings
Our portals use
- Advanced gaskets and O-rings with excellent oil resistance and low deterioration rates
- A sealed input gear and double-lipped output seal
- 100% sealing coverage throughout so you can forget about oil leaks
- Double-angular contact output bearings to prevent premature wear
- Roller idler and drive bearings to maintain perfect gear meshing
- Don’t Forget a Frame Stiffener
Portals and oversized tires deliver serious fun, but they also put extra strain on your machine’s frame. Strengthen your suspension setup by adding a SuperATV Frame Stiffener when installing your new HD11 portals.
Top-Tier Customer Service
Not sure which portals are right for your ride? Don’t worry—we’ve got the best customer service in the business ready to help. Call us, and we’ll get you dialed in.
6” Portal Gear Lift Includes
(4) Assembled portal hub boxes complete with 9310 gears, seals, output shaft, Thermo-Tork® gaskets, and thrust bearings
(4) Universal hubs and stainless steel slotted rotors with lugs
(4) Specialized steel alloy backing plates
(4) Steel caliper mounting plates
(6) Brake caliper mounts
(16) Shims
Extended brake lines with parking brake and brake cable brackets
All required hardware, including recessed castle nut socket
Max Tire Size Recommendations for 6” Portal Gear Lift
Max Tire Size Required Suspension Setup with 6" Portals
35" Stock
If you need help figuring out which gear reduction is right for you, check out our portal gear reduction calculator .
Max tire sizes are measured at full compression and full turn. The given tires sizes are the largest we fit without rubbing. With minor trimming or a small amount of rub, larger tire sizes can be used.
Patent # 11,299,042
Patent # 11,318,787
Features
- Available with billet or cast aluminum housing
- Cool, quiet, precision ground gears made from 9310 alloy billet steel
- 1.5 in. diameter 4340 hardened steel drive shaft
- Housings use advanced gaskets or O-rings that don’t let anything through
- Universal hubs can be set up to work with the following bolt patterns: 4/156, 4/137, 4/115, and 4/110
- Gear reduction reduces stress on your drivetrain
- Lighter than the competition
Fitment (per SuperATV)
Can-Am Defender HD 11 Limited : 2026+ Can-Am Defender HD 11 XMR w/Half Doors : 2026+ Can-Am Defender HD 11 XT : 2026+ Can-Am Defender HD 11 XT Cab : 2026+ Can-Am Defender MAX HD 11 XT Cab : 2026+ Can-Am Defender MAX HD 11 XT : 2026+ Can-Am Defender MAX HD 11 Limited : 2026+ Can-Am Defender MAX HD 11 Lone Star : 2026+ Can-Am Defender MAX HD 11 Lone Star Cab : 2026+ Can-Am Defender MAX HD 11 XMR w/Half Doors : 2026+
Wheel Requirements
- 18” or larger wheel required
- 18" wheels cannot exceed 4-1/2” backspacing
- 20” and larger wheels cannot exceed 5” backspacing
- Wheels need to have a center hole of at least 3.25" (82.55mm) or require a 1” wheel spacer
Installation instructions (PDF)
Ships free from SuperATV. Price is SuperATV's current price.
