Can-Am Defender HD9 8" Portal Gear Lift

Portals That’ll Completely Change How Your Defender HD9 Performs
Take your Can-Am Defender HD9 from capable to unstoppable with SuperATV’s 8” GDP Portals. Designed for riders who demand more, these portals add 8 inches of lift and a precision-engineered gear reduction that increases torque and performance. Enjoy higher ground clearance and the ability to mount larger tires for tackling tougher terrain. Choose between 45%, 60%, or 70% gear reductions, along with billet or cast housing options, to build your ideal setup.

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. Didn’t think dual idlers mattered? With GDP’s quality and experience, they finally do.

Made for All Riding Styles
Our Defender HD9 8” GDP Portals are designed with flexibility in mind, letting you choose the performance that fits your riding style. Go with a 45%, 60%, or 70% gear reduction to get the right mix of torque and speed for your setup. No matter which you choose, you’ll gain the muscle needed for rock crawling, the capability to handle oversized tires, and the precision to navigate deep, muddy terrain without struggle.

Protects Your Drivetrain
GDP Portals for your Defender HD9 are engineered to move the gear reduction out to the wheel hub, taking pressure off your machine’s core components. By reducing stress on the axles, prop shaft, differential, and transmission, you’re setting your rig up for improved longevity. It’s a simple upgrade that can help prevent major repair costs later.

Built Tough
Upgrades should be as tough as your machine, and SuperATV’s GDP Portals for the Defender HD9 don’t disappoint. Choose between cast or billet aluminum housings for the durability you need. Reinforced with 5/16” backing plates crafted from advanced steel alloy, these portals are built to withstand serious punishment. And with a lifetime warranty backing them up, you’ve got protection you can count on.

• 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

Frame Stiffener Required
Upgrading your Can-Am Defender HD9 with an 8” portal lift and bigger tires delivers serious gains, but it also puts your frame to the test. SuperATV’s Frame Stiffener helps you stay ahead of that stress by adding the support your machine needs. It’s engineered to prevent deformation and keep your ride tough enough for aggressive use.

Customer Service that Can’t be Beat
Picking out portals for your Defender HD9 can feel overwhelming, but you don’t have to figure it out alone. Our dedicated team is ready to help you choose the right GDP configuration for the way you ride. Give us a call and we’ll help you get it dialed in.

8” Portal Gear Lift Includes:
(4) Assembled portal hub boxes complete with 9310 gears, seals, output shaft, gaskets, and thrust bearings
(4) Universal hubs and precision-ground stainless steel slotted rotors with lugs
(4) Specialized steel alloy backing plates
(4) Steel caliper mounting plates
Extended brake lines
Steering stop kit (dual idler configuration only)
All required hardware, including recessed castle nut socket
Frame stiffener (must select at checkout)

Can-Am Defender Portal Gear Suspension Recommendations
Max Tire Size	Required Suspension Setup with 8" Portals
40"	2" Forward Offset A-Arms
44"	6" Lift Kit
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