GDP Portals Will Revamp Your Ride
GDP didn’t make the first side-by-side portal kit on the market—just the first kit that anybody gave a damn about. If you’re looking for a way to completely redefine your Can-Am Defender, look no further than SuperATV’s GDP 4” Portal Gear Lift. Choose between a 15% or 30% gear reduction, and add a dual idler gear for strength that you can’t find anywhere else. Get ready to discover why GDP is the most respected name in the portal game.
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.
Perfect for All Riding Styles
It doesn’t matter where, when, or how you ride—there’s a GDP Portal Gear Lift for you. From the trails to mud bogs to wide-open dunes, our portals make every ride better. Get a 15% gear reduction to enjoy speedy rides and a torque boost. Or go for a 30% gear reduction to really gear down and turn those monster tires. You can even add a dual idler gear for ultimate strength. Our Can-Am Defender dual idler portals are perfect for riders who don’t slow down for anything.
A Gear Reduction That Protects Your Drivetrain
Portals put the gear reduction right in the hub, after your transmission, prop shaft, differential, and axles. That means it reduces stress on your entire drivetrain. You get more power and your most vital components will last longer, too. That’s a win-win.
Nothing Is Stronger Than GDP
We know how you ride—pedal to the metal, full send, the whole nine yards. That’s why we made sure GDP portals are the strongest on the planet. They’re available with cast or billet aluminum housings that are thicker and stronger than any other portal housings on the market. And they have 5/16” thick backing plates made from an advanced steel alloy. All of that comes together to bring you the best damn portal gear lift imaginable. 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
Complete the Package with a Frame Stiffener
Portals and monster tires are fun, but they can place additional stress on your machine’s frame. To make your suspension bulletproof, we recommend adding a SuperATV Frame Stiffener when you install your new Can-Am portals!
Top-Rated Customer Service
Still need a little help getting exactly what you need? With GDP, you get a dedicated portal tech support team. Give us a call so we can get the perfect set of portals in your hands today.
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
- Available with billet or cast aluminum housing
- Dual idler gear configuration maximizes strength
- Cool, quiet, precision ground gears made from 9310 alloy billet steel
- Increases width by 4 in. per side (8 in. total)
- 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
- Dual idler gear configuration adds a 1” forward and rear offset
- Lighter than the competition
- 14” or larger wheel required
- Wheels cannot exceed 4-1/2” backspacing
- Not compatible with dual beadlock wheels
