The SuperATV 8" GDP Portal Gear Lift for the 2018-2021 Polaris RZR RS1 lifts the machine 8 inches at the hubs and adds a 30% gear reduction. Choose cast aluminum or billet aluminum housings to match how you ride. The gear reduction in each hub relieves stress on your drivetrain, so you can run bigger tires without overworking axles and the transmission.
Pair it with the Polaris RZR RS1 Frame Stiffener, sold separately.
Key Features
- Available with billet or cast aluminum housing
- Cool, quiet, precision ground gears made from 9310 alloy billet steel
- 1.5 in. forward and rear offset
- Increases width by 4 in. per side (8 in. total)
- 1.5 in. diameter 4340 hardened steel driveshaft
- Housings use advanced gaskets and rubber 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
- Limited lifetime warranty from the manufacturer
Built To Solve: RZR RS1 Clearance And Big-Tire Problems
- Not enough ground clearance for rocks, ruts and ledges
- Bigger tires that bog the machine down
- Extra strain on axles, differential and transmission from oversized tires
Best For: Polaris RZR RS1 Owners
- Polaris RZR RS1 owners (2018-2021) stepping up to bigger tires
- Mud, rock and trail riders who want more clearance and low-end torque
- Owners who want a portal lift instead of a tall suspension lift
Specifications
- Lift: 8 inches at the hubs
- Gear reduction options: 30%
- Housing options: cast aluminum, billet aluminum
- Wheel requirements (per the manufacturer): 22" or larger wheel required; wheels cannot exceed 5" backspacing; wheels need to have a center hole of at least 3.25" (82.55mm) or require a 1" wheel spacer
- Warranty: Limited Lifetime warranty from the manufacturer against manufacturing defects to the original purchaser
- Included (per the manufacturer): (4) Assembled portal hub boxes complete with 9310 gears, seals, output shaft, advanced 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; (2) Caliper adapter plates; (2) Steel steering arms; Extended brake lines; All required hardware, including recessed castle nut socket. A frame stiffener is not included. Anything not listed here is not included.
- Installation instructions: PGH8-1-33-303 (PDF), PGH8-1-33-301 (PDF)
Tire Size Guide
Per the manufacturer, measured at full compression and full turn:
- 40": Stock
- 42": 1.5" Forward Front A-Arms
- 44": 1.5" Forward Front A-Arms and 3-5" Lift Kit
- 50": 7-10" Lift Kit
Fitment
- Polaris RZR RS1 (2018-2021)
The manufacturer lists these applications by model and year. Fitment is not guaranteed on models or years not listed above; confirm your exact model before ordering.
FAQ
Which machines does this fit?
The Polaris RZR RS1 models and years listed in the fitment section above (2018-2021). Confirm your exact model before ordering.
Which gear reduction should I choose?
This kit is offered with a 30% gear reduction.
What tire size can I run?
The manufacturer lists tire sizes by suspension setup in the tire size guide above. The largest size listed is 50" with 7-10" Lift Kit.
What wheels do I need?
22" or larger wheel required; wheels cannot exceed 5" backspacing; wheels need to have a center hole of at least 3.25" (82.55mm) or require a 1" wheel spacer.
Is a frame stiffener included?
No. SuperATV sells a frame stiffener for this machine separately: the Polaris RZR RS1 Frame Stiffener. It reinforces the frame for portals, lifts and bigger tires.
Are install instructions available?
Yes. The manufacturer installation instructions are linked on this page.
Why SuperATV
SuperATV builds GDP portals with 9310 steel alloy gears and has a dedicated portal support team. Dunes 2 Dezert SXS ships SuperATV portals nationwide.
Upgrade Your RZR RS1
Confirm your Polaris RZR RS1 model and year above, choose your housing and gear reduction, and add it to your cart.
