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
Boost Your Defender HD7’s Game with GDP Portals
Take your Can-Am Defender HD7 to the next level with SuperATV’s 4” Portal Gear Lift. With a built-in gear reduction and 6 inches of lift, you get more torque, improved ground clearance, and the ability to run bigger tires without overloading your machine. Pick between a 15% or 30% gear reduction to match your riding style, and for extra durability, swap the cast housing for our billet aluminum option. Plus, you can upgrade to our Dual Idlers for maximum strength and performance.
What Is a Dual Idler?
It’s all about the details with our dual idler gear portals. Two idler gears mean the load is spread out, giving you a stronger setup—but only if they mesh perfectly. That’s why we rely on precision CNC grinding and 9310 steel to make sure every gear is just right.
Designed to Match Your Riding Style
GDP Portal Gear Lifts are built to handle every kind of riding. From dunes and mud to fast trails and daily work, there’s a setup to match your needs. Choose a 15% gear reduction for quicker acceleration with plenty of torque, or a 30% reduction for maximum power and massive tires.
Your Drivetrain Stays Protected
By placing the gear reduction directly in the wheel hub, GDP portals reduce the load transferred through the drivetrain. This design helps protect important parts like your axles, differential, prop shafts, and transmission by limiting the strain caused by oversized tires.
Built Tough with Aluminum and Steel
We built these portals to take a beating. The cast and billet aluminum housings are tough enough for serious abuse, and the advanced steel alloy backing plates add strength you won’t find anywhere else.
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 HD7 portals.
Top-Rated Customer Service
Still have questions or need a hand? Our customer support team is ready to help. Give us a call and we’ll make sure you get the right setup.
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 GDP 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)
Is a 4-inch portal gear lift better than a standard lift kit for a Can-Am Defender 4?
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.
Will this portal gear lift fit my Can-Am Defender 4 or Defender MAX?
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.
How hard is it to install a SuperATV 4-inch portal gear lift?
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.
What gear reduction options are available and how do I choose one?
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.
How much wider does the Defender get with this portal gear lift installed?
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.
What makes SuperATV GDP portals stronger than other portal lifts?
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.
Do I need special wheels or backspacing for this portal gear lift?
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.
Features
- 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
Fitment (per SuperATV)
Can-Am Defender HD 7 : 2022+ Can-Am Defender HD 7 DPS : 2022+ Can-Am Defender MAX HD 7 : 2022+
Wheel Requirements
- 14” or larger wheel required
- Wheels cannot exceed 4-1/2” backspacing
- Not compatible with dual beadlock wheels
Installation instructions (PDF)
Ships free from SuperATV. Price is SuperATV's current price.
