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 SuperATV's dual idler configuration.
What Is a Dual Idler?
SuperATV has spent years perfecting its 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 SuperATV precision grinds 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
The 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.
The 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—SuperATV knows because it tested them
Advanced Gaskets, Seals, and Bearings
The 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—SuperATV has the best customer service in the business ready to help. Call us, and SuperATV will 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
(12) Bushings
(6) Steel sleeves
(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 SuperATV's portal gear reduction calculator .
Max tire sizes are measured at full compression and full turn. The given tires sizes are the largest SuperATV fits 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 information
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
