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
Create the Ultimate Defender HD8 with GDP Portals
Your Can-Am Defender HD8 isn’t a powerhouse until it has SuperATV’s 6” Portal Gear Lift installed. You’ll get 6” of lift and a gear reduction in one package. This means more torque and bigger tires without stressing out your Defender. Choose between 30%, 45%, or 60% gear reduction to match your riding style, and for maximum durability, upgrade from our cast housing to our billet aluminum housing. Are you looking for even more power? Our dual idler portals are the perfect option for you.
What is a Dual Idler?
Perfection takes time. After years of research and development, we’ve made our dual idler gear portals unlike any other. By placing a second idler gear in the portal box, the load gets spread over twice as much surface area for more reliable torque transfer and the strongest gear set you can get. Two idler gears don’t do a thing if they’re not mated perfectly, though. Precision CNC grinding ensures ours do. Our gears are made from the industry’s toughest 9310 steel alloy.
Get the Power to Conquer any Terrain
A gear reduction changes how your ride performs on different terrain. Choose 30% for faster speeds with plenty of torque. If you have larger tires and tackle tough trails, go with 45% to get extra power and control. Construct the ultimate mudder with a 60% gear drop, and maximize its torque by adding dual idler gears.
Protect Your Drivetrain
GDP Portals relocate the gear reduction to the wheel hubs instead of the transmission. This reduces stress on your Defender HD8’s drivetrain, letting your axles, driveshaft, differential, and transmission work less, which lowers wear and helps prevent costly repairs.
Unmatched Strength
Durability matters. That’s why our GDP Portals come with your choice of cast or billet aluminum housing and heavy-duty 5/16” backing plates made from advanced steel alloy. They’re built to handle abuse and backed by a lifetime warranty.
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
Monster tires and portals bring the fun—but they also stress your machine’s frame. Reinforce your suspension with a SuperATV Frame Stiffener for unbeatable durability.
You Can’t Beat Our Customer Service
Picking the right portals for your ride can be tough. That’s why our top-notch customer service team is here to help. Call us, and we’ll make sure you get the perfect setup.
6” Portal Gear Lift Includes
- (4) Assembled portal hub boxes complete w/ 9310 gears, seals, output shaft, gaskets, and thrust bearings
- (4) Universal hubs and precision-ground stainless steel slotted rotors w/ lugs
- (4) Specialized steel alloy backing plates
- (4) Steel caliper mounting plates
- (6) Brake caliper mounts
- (2) Steel steering arms
- 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 GDP Portals
- 34"
- 2" Forward Offset A-Arms
- 39"
- 6" Lift Kit (strongly recommended)
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 housings
- 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 8 : 2016-2021 Can-Am Defender HD 8 DPS : 2016-2021 Can-Am Defender HD 8 XT : 2016-2021 Can-Am Defender MAX HD 8 : 2017-2021 Can-Am Defender MAX HD 8 DPS : 2017-2021 Can-Am Defender MAX HD 8 XT : 2017-2021
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
- NOTE: Big Lift Kit or 2" Forward Offset A-Arms strongly recommended
Installation instructions (PDF)
Ships free from SuperATV. Price is SuperATV's current price.
