Can-Am Defender HD9 4" Portal Gear Lift
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INSTALLATION INSTRUCTIONS
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Why You’ll Love It
- 4” Portal Lift adds ground clearance directly at the hubs
- 15% or 30% 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
Want your Can-Am Defender HD9 to handle bigger obstacles and bigger tires? The SuperATV 6” Portal Gear Lift has you covered. With 4 inches of lift and built-in gear reduction, you get extra torque and ground clearance without stressing your machine out. Choose a 15% or 30% gear reduction based on how you ride, and if you want something super tough, go for the billet aluminum housing upgrade. If you’re looking to really take it to the top, go with a set of our dual idlers.
What Is a Dual Idler?
Our dual idler gear portals take performance seriously. With a second idler gear in the portal box, the load spreads out, which means more reliable torque and the strongest gear set you can get. But it only works if the gears mesh perfectly. That’s why every gear is precision CNC ground from tough 9310 steel.
Built for Any Terrain
GDP Portal Gear Lifts aren’t one-size-fits-all. Whether you’re playing in the sand, slinging mud, cruising trails, or knocking out chores, there’s an option for you. Go with a 15% gear reduction if you want to keep things fast, or choose a 30% for serious torque and oversized tires. Dual idler gears add the extra strength you need to ride harder with confidence.
Keeps Your Drivetrain Safe
With a gear reduction built into the wheel hub, GDP portals minimize the stress that normally travels through the drivetrain. This added protection helps extend the life of key parts like the axles, differential, prop shaft, and transmission when running larger tires.
Built Tough with Aluminum and Steel
We didn’t cut corners when building these portals. Strong cast and billet aluminum housings paired with advanced steel alloy backing plates make them incredibly tough and hard to beat.
- 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 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
Advanced Gaskets, Seals, and Bearings
Our portals use:
Don’t Forget Your Frame Stiffener
Bigger tires and portals mean bigger forces on your frame. When upgrading to Can-Am portals, protect your machine and reinforce your suspension with a SuperATV Frame Stiffener.
Unbeatable Customer Service
Need help figuring out the right portals? We’ve got a team that specializes in just that. Give us a call and we’ll help get the right setup headed your way.
| 4” Portal Gear Lift Includes: | ||
|---|---|---|
| (4) Assembled portal hub boxes complete with 9310 gears, seals, output shaft, 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 | ||
| (2) Steel steering arms | ||
| Extended brake lines | ||
| All required hardware, including recessed castle nut socket | ||
| Frame stiffener (optional) | ||
| Max Tire Size Recommendations for 4” Portal Gear Lift | ||
|---|---|---|
| Max Tire Size | Required Suspension Setup with 4" Portals | |
| 26" | Stock | |
| 27" | 3" Lift Kit | |
| 28" to 34" | 2" Forward Offset A-Arms | |
| 28" to 38" | 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
Frequently Asked Questions (FAQ)
Yes. A 4-inch portal gear lift gives you both ground clearance and torque—not just height like a standard lift kit. By moving the gear reduction to the hub, portals reduce stress on axles, differentials, and the transmission while allowing you to run larger tires with confidence.
This portal gear lift is machine-specific and engineered to fit select Can-Am Defender and Defender MAX models listed in our fitment guide. Always check the fitment tab on the product page to confirm compatibility with your exact year and model.
Installing portals is more involved than a basic lift because they replace the hubs and integrate gear reduction. We include detailed step-by-step instructions, extended brake lines, and all required hardware to make installation as straightforward as possible for experienced DIY riders.
We offer 15% and 30% gear reduction options. A 15% reduction maintains higher trail speed with added torque, while 30% is ideal for heavy loads, mud riding, or turning larger tires that require more low-end power.
This 4-inch portal gear lift increases width by approximately 4 inches per side, giving your Defender a wider, more stable stance. The added width improves control when running larger tires or navigating uneven terrain.
GDP portals use precision-ground 9310 alloy steel gears and offer a dual idler configuration that spreads load across more surface area. This engineering delivers smoother operation and maximum strength under extreme torque, backed by years of real-world testing.
Yes. Wheels must be at least 14 inches in diameter and cannot exceed 4.5 inches of backspacing. Following these requirements ensures proper clearance, correct steering geometry, and long-term reliability of the portal system.
- Available with billet or cast aluminum housing
- Dual idler gear configuration maximizes strength
- 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
- Dual idler gear configuration adds a 3/4” front and rear offset—1.5” total extension
- Lighter than the competition
- Can-Am Defender HD 9 : 2022+
- Can-Am Defender HD 9 DPS : 2022+
- Can-Am Defender HD 9 DPS CAB : 2022+
- Can-Am Defender HD 9 XT : 2022+
- Can-Am Defender MAX HD 9 : 2022+
- Can-Am Defender MAX HD 9 DPS : 2022+
- Can-Am Defender MAX HD 9 XT : 2022+
Wheel Requirements:
- 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
Why You’ll Love It
- 4” Portal Lift adds ground clearance directly at the hubs
- 15% or 30% 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
Want your Can-Am Defender HD9 to handle bigger obstacles and bigger tires? The SuperATV 6” Portal Gear Lift has you covered. With 4 inches of lift and built-in gear reduction, you get extra torque and ground clearance without stressing your machine out. Choose a 15% or 30% gear reduction based on how you ride, and if you want something super tough, go for the billet aluminum housing upgrade. If you’re looking to really take it to the top, go with a set of our dual idlers.
What Is a Dual Idler?
Our dual idler gear portals take performance seriously. With a second idler gear in the portal box, the load spreads out, which means more reliable torque and the strongest gear set you can get. But it only works if the gears mesh perfectly. That’s why every gear is precision CNC ground from tough 9310 steel.
Built for Any Terrain
GDP Portal Gear Lifts aren’t one-size-fits-all. Whether you’re playing in the sand, slinging mud, cruising trails, or knocking out chores, there’s an option for you. Go with a 15% gear reduction if you want to keep things fast, or choose a 30% for serious torque and oversized tires. Dual idler gears add the extra strength you need to ride harder with confidence.
Keeps Your Drivetrain Safe
With a gear reduction built into the wheel hub, GDP portals minimize the stress that normally travels through the drivetrain. This added protection helps extend the life of key parts like the axles, differential, prop shaft, and transmission when running larger tires.
Built Tough with Aluminum and Steel
We didn’t cut corners when building these portals. Strong cast and billet aluminum housings paired with advanced steel alloy backing plates make them incredibly tough and hard to beat.
- 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 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
Advanced Gaskets, Seals, and Bearings
Our portals use:
Don’t Forget Your Frame Stiffener
Bigger tires and portals mean bigger forces on your frame. When upgrading to Can-Am portals, protect your machine and reinforce your suspension with a SuperATV Frame Stiffener.
Unbeatable Customer Service
Need help figuring out the right portals? We’ve got a team that specializes in just that. Give us a call and we’ll help get the right setup headed your way.
| 4” Portal Gear Lift Includes: | ||
|---|---|---|
| (4) Assembled portal hub boxes complete with 9310 gears, seals, output shaft, 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 | ||
| (2) Steel steering arms | ||
| Extended brake lines | ||
| All required hardware, including recessed castle nut socket | ||
| Frame stiffener (optional) | ||
| Max Tire Size Recommendations for 4” Portal Gear Lift | ||
|---|---|---|
| Max Tire Size | Required Suspension Setup with 4" Portals | |
| 26" | Stock | |
| 27" | 3" Lift Kit | |
| 28" to 34" | 2" Forward Offset A-Arms | |
| 28" to 38" | 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
Frequently Asked Questions (FAQ)
Yes. A 4-inch portal gear lift gives you both ground clearance and torque—not just height like a standard lift kit. By moving the gear reduction to the hub, portals reduce stress on axles, differentials, and the transmission while allowing you to run larger tires with confidence.
This portal gear lift is machine-specific and engineered to fit select Can-Am Defender and Defender MAX models listed in our fitment guide. Always check the fitment tab on the product page to confirm compatibility with your exact year and model.
Installing portals is more involved than a basic lift because they replace the hubs and integrate gear reduction. We include detailed step-by-step instructions, extended brake lines, and all required hardware to make installation as straightforward as possible for experienced DIY riders.
We offer 15% and 30% gear reduction options. A 15% reduction maintains higher trail speed with added torque, while 30% is ideal for heavy loads, mud riding, or turning larger tires that require more low-end power.
This 4-inch portal gear lift increases width by approximately 4 inches per side, giving your Defender a wider, more stable stance. The added width improves control when running larger tires or navigating uneven terrain.
GDP portals use precision-ground 9310 alloy steel gears and offer a dual idler configuration that spreads load across more surface area. This engineering delivers smoother operation and maximum strength under extreme torque, backed by years of real-world testing.
Yes. Wheels must be at least 14 inches in diameter and cannot exceed 4.5 inches of backspacing. Following these requirements ensures proper clearance, correct steering geometry, and long-term reliability of the portal system.
- Available with billet or cast aluminum housing
- Dual idler gear configuration maximizes strength
- 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
- Dual idler gear configuration adds a 3/4” front and rear offset—1.5” total extension
- Lighter than the competition
- Can-Am Defender HD 9 : 2022+
- Can-Am Defender HD 9 DPS : 2022+
- Can-Am Defender HD 9 DPS CAB : 2022+
- Can-Am Defender HD 9 XT : 2022+
- Can-Am Defender MAX HD 9 : 2022+
- Can-Am Defender MAX HD 9 DPS : 2022+
- Can-Am Defender MAX HD 9 XT : 2022+
Wheel Requirements:
- 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
Warranty & Returns
SuperATV offers premium products and extends one of the industry's best warranties to go with them. Each GDP Portal Gear Lift carries a Limited Lifetime warranty against manufacturing defects to the original purchaser, for the period and subject to the terms stated on our Warranty Policy page.
For complete warranty details see our Warranty Policy page.