Polaris RZR Trail S 1000 4" Portal Gear Lift

No One Does Portals Like GDP
What can you do with the extra ground clearance and torque that GDP gives you? Anything you want. Reinvent your Polaris RZR Trail S 1000 with SuperATV’s 4” GDP Portal Gear Lift—the industry’s best portals. What makes them the best? You get your choice of a 15% or 30% gear reduction along with cast or billet aluminum housing options so you can ride any way you want. If you want the best of the best, you need to upgrade to dual idler gears. They give you the most strength possible.

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.

GDP Lets You Ride How You Want
Mud, rocks, trails, and desert are all perfect for GDP. If you like bounty holes and boulder fields, go with a 30% gear reduction for low-end torque and bigger tires. If you love to keep the pedal down, choose a 15% gear reduction that’s perfect for high speed and tires that aren’t as big. No matter how you ride, GDP has what you need.

Portals Reduce Drivetrain Stress
GDP’s RZR Trail S 1000 Portals put the gear reduction directly in the hub, which is good news for your drivetrain. This placement greatly reduces the amount of stress placed on your axles, differential, prop shaft, and transmission. Because portals don’t make those parts work overtime, they’ll last longer—which saves you money in the long run. You’re welcome.

The Pinnacle of Portal Strength
The core of any good portal lift is strength, and that’s something we know a lot about. With more GDPs sold than any other portal system, we have the experience to make them right. Our cast and billet aluminum housings are meticulously designed to maximize durability. Those housings come paired with our advanced steel alloy backing plate that make them unbeatable.

• 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

Top-Rated Customer Service
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 w/ 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 with spacers
(2) Steel steering arms
Extended brake lines with parking brake and brake cable brackets
All required hardware including recessed castle nut socket

Max Tire Sizes for 4” Portal Gear Lift
Tire Size	Required Suspension Setup with 4" Portals
33"	Stock
33"	1.5" Forward Offset A-Arms
37" with OEM fender flares 33" with SATV fender flares	1.5" Forward Offset A-Arms and 1.5" Rear Offset A-Arms
44"	7–10" 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

• Polaris RZR Trail S 1000 Premium : 2021+
• Polaris RZR Trail S 1000 Ultimate : 2021+

Wheel Requirements

• 14” or larger wheel required
• Cannot exceed 5” backspacing
• Wheels need to have a center hole of at least 3.25" (82.55mm) or require a 1” wheel spacer

• 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 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