CAN-AM DEFENDER HD11 4" PORTAL GEAR LIFT

CAN-AM DEFENDER HD11 4" PORTAL GEAR LIFT

Take Your Defender HD11 to the Next Level with GDP Portals

SuperATV’s 4” Portal Gear Lift for the Can-Am Defender HD11 combines 4 inches of lift with an integrated gear reduction for increased torque and ground clearance. It allows larger tires while reducing stress on the drivetrain. Gear reduction options include 15% or 30%, and the upgrade from cast to billet aluminum housing provides enhanced strength and durability for extreme conditions. These portals don’t just upgrade your ride—they transform it.

Built to Conquer the Trail

No matter where or how you ride, GDP Portal Gear Lifts deliver. Tear up dunes, dive into mud, fly through trails, or put your machine to work with confidence. Pick a 15% gear reduction for faster, more aggressive riding, or a 30% reduction for extreme torque and massive tires.

Your Drivetrain Stays Safe

By relocating the gear reduction to the wheel hub, GDP portals absorb much of the workload before it reaches the drivetrain. This design helps protect essential parts—axles, differentials, prop shafts, and transmissions—from unnecessary stress caused by having larger tires.

Built Tough with Aluminum and Steel

Our cast and billet aluminum housings are the thickest and strongest you can get. Combine that with 5/16” backing plates made from an advanced steel alloy, and our portals are unbeatable. 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

Got questions or want to double-check your choices? Our dedicated portal team is ready when you are. Give us a call and we’ll help you get exactly what you need.

4” 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) Steel sleeves

(12) Bushings

(4) Shims

Extended brake lines

All required hardware, including recessed castle nut socket

Max Tire Size Recommendations for 4” Portal Gear Lift

Max Tire Size Required Suspension Setup with 4" Portals

32" 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 hub fits all major bolt patterns
• Gear reduction reduces stress on your drivetrain
• Lighter than the competition
• 14” or larger wheel required
• Wheels cannot exceed 4-1/2” backspacing
• Not compatible with dual beadlock wheels
• Wheels need to have a center hole of at least 3.25" (82.55mm) or require a 1” wheel spacer

Fitment

• 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+