The best, toughest, and most reliable portal lifts only come from GDP. So upgrade to SuperATV's GDP 4" Portal Gear Lift for your Polaris RZR XP Turbo S to get a lift and a gear reduction in one box. Get the clearance to run bigger tires and the torque you need to turn them. The lift and gear reduction are in the hub, which means they maintain suspension geometry and reduce drivetrain stress. Our 4" portal lift is available with 15% or 30% gear reductions and cast or billet housings. And you can opt for dual idler gears to get unbeatable strength. No matter how you ride or how much you tear your stuff up, GDP is for you.

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.

No matter what type of riding you do, we've got a gear reduction that will make you better at it. If your favorite ride is through deep mud or all over killer rock gardens, get a 30% gear reduction. It gives you more torque so you can turn bigger tires through all sorts of crazy terrain. Want to hit top speed with tires that aren't as huge? Stick with a 15% gear reduction. It still gives you enough torque to make you grin, but saves more of your top-end speed.

GDP puts the gear reduction right in the hub. Because that's right at the end of your drivetrain, all your components benefit from it the same way you do. With GDP Portals, your axles, differential, prop shafts, and transmission all work less and wear less than with stock.

Try as you might, you won't find portals stronger than GDP. Our cast and billet aluminum housings are smarter, stronger, and more reliable. We pair them with 5/16" backing plates that use a special steel alloy that's incredibly strong. Together, they make an unbeatable pair that's tough enough for you to send it.

• 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

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
• 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" offset
• Lighter than the competition

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 precision-ground stainless steel slotted rotors with lugs
• (4) Specialized steel alloy backing plates
• (4) Steel caliper mounting plates
• (4) Caliper mounting plate shims (dual idler configuration only)
• (4) Caliper adapters
• (4) Brake pad retainer clips (specific models only)
• (2) Steel steering arms
• (2) Aluminum hub adapters
• Extended brake lines
• All required hardware, including recessed castle nut socket
• Frame stiffener included

Wheel Requirements:

• 14" or larger wheel required
• Wheels cannot exceed 5" backspacing
• Not compatible with dual beadlock wheels

Fitment:

• Polaris RZR XP Turbo S 2018-2021
• Polaris RZR XP Turbo S Velocity 2019-2021
• Polaris RZR XP 4 Turbo S 2019-2021

Notes:

• Wheels need to have a center hole of at least 3.25" (82.55mm) or require a 1" wheel spacer.
• This product can impact machine operation. Customer and/or user is responsible for ensuring that this product is compatible with their machine as currently configured, properly installed, and understands any impact this product has or might have on the machine's operation.