Polaris RZR XP 8" Portal Gear Lift

Make Your RZR a Mud Monster
If you want the ultimate mud-conquering upgrade, you need SuperATV's Polaris RZR XP 8" Portal Gear Lift. It gives you the clearance, power, and performance to conquer even the thickest mud with ease. You can choose a 45%, 60%, or 70% gear reduction and choose between a billet or cast aluminum housing to turn your RZR into the best mud machine on the planet.

What’s 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.

Pick What You Want with 45%, 60%, and 70% Gear Reductions
Putting big tires on your RZR XP looks cool, and they make every mud pit easier to rip through. GDP Portals not only give you room for up to 40” tires on your RZR XP but also come with a 45%, 60%, or 70% gear reduction to boost your torque. Boosted torque means more power, and more power means you can turn massive tires almost like they’re as light as stock.

Protect Your Drive Train
With portals, the gear reduction sits right in the hub, meaning your drivetrain doesn't have to work as hard to turn those large tires. That’s good news for your axles, differential, prop shaft, and transmission. They’ll wear less and last longer.

Housings and Backing Plates Built Tough
Our GDP Portals are built to withstand the roughest rides you can give them. Whether you choose cast or 6061 billet aluminum housings, you'll benefit from awesome durability thanks to our proven design. Add in the 5/16” backing plates made from advanced steel alloy, and you've got the sturdiest portals in the industry—your RZR XP deserves nothing but the best.

• 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

You Need a Frame Stiffener
No matter how beefy your RZR is, an 8” portal gear lift is a lot of weight to add. That’s why a frame stiffener is required to strengthen your frame. We’d much rather be safe than risk the chance of hitting a bump hard enough to bend your stock frame. Make sure to add one if you don’t already have one.

Best Customer Service in the Industry
Still need a little help getting exactly what you need? We’ve got a dedicated team just for portal support. 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 precision-ground stainless steel slotted rotors w/ lugs
• (4) Specialized steel alloy backing plates
• (4) Steel caliper mounting plates
• (2) Caliper adapter plates (dual idler configuration only)
• Extended brake lines
• All required hardware including recessed castle nut socket

Max Tire Sizes for 8” Portal Gear Lift
Max Tire Size	Required Suspension Setup with GDP Portals
40"	Stock
42”	3” Lift Kit
44"	1.5" Forward Offset A-Arms
44"	2" Offset A-Arms
45"	1.5" Forward Offset A-Arms and 3” Lift Kit
46"	2" Offset A-Arms
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

• Polaris RZR XP : 2024+
• Polaris RZR XP 4 : 2024+

Wheel Requirements

• 22” or larger wheel required
• Cannot exceed 5” backspacing

• 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. forward and rear offset
• 1.5 in. diameter 4340 hardened steel drive shaft
• Housings use gaskets or O-rings that don’t let anything through
• Universal hub fits all major bolt patterns
• Gear reduction reduces stress on your drivetrain