SuperATV
Polaris RZR RS1 8" Portal Gear Lift
Polaris RZR RS1 8" Portal Gear Lift
Search matches make and model, not model year. This part fits:
Wheel Requirements:
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
Not sure? Text your year, make and model to 719-428-6837 or use Build Concierge and we'll confirm the right part. Freight-heavy parts can't be returned cheaply, so it's worth asking. Need a factory part instead? We can order OEM parts for any major make.
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Located at Pikes Peak International Raceway, home of Adrenaline Park and Peak Adrenaline. We run many of these parts on our personal Maverick R and X3 rigs.
Not sure what fits your build? Call or text Tim directly at 719-428-6837. Real riders, real advice — no call centers.
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Most orders leave the manufacturer in 1–2 business days — no middle warehouse, no re-boxing. Ship-by date shown above.
Product Description
SuperATV’s GDP 8” Portal Gear
Lift for the Polaris RZR RS1 is geared down so you can go big. It gives you a
lift and a 45% 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, so they maintain suspension geometry and reduce drivetrain stress.
With huge clearance, huge torque, and optional billet aluminum housings, you
can install monster tires to take your torqued-out single-seater anywhere.
Perfect for Mud
With 8” portals and a 45%
gear reduction, you get clearance for huge tires and a massive boost in
torque. It’ll turn monster tires like they’re stock. Your RS1 will be a
single-seater mud monster that can’t be stopped. Now the challenge is finding
a mud hole tough enough for you.
Perfect for
Rocks
Get tons of torque to crawl over any rock or boulder you
can find by installing an 8” portal box with a 45% gear reduction. With that
much power, rock shelves will feel like speed bumps and boulders feel like
pebbles. With 8” of clearance, you can run monster tires and crawl through any
rock garden you find.
Learn more about how tire size and gear reduction
can unleash your machine’s potential.
Better
Gears
Our gears are precision ground and made with 9310 billet
steel alloy. They’re designed to take all the torque and abuse you can give
them without chipping teeth or blowing up. Our precise design and
manufacturing mean they’re cool and quiet even when you’re hammering down the
throttle in the mud hole.
Billet Housings
Choose billet or cast aluminum housings to finish your portals. Our billet
housings are CNC machined right here in Madison, Indiana and give you
increased strength and consistency over cast. Plus, they look good painted
with mud.
Reinforce Your UTV with a Frame
Stiffener
We highly recommend running a SuperATV Frame Stiffener
with your 8" Portal Gear Lift. The stock frame just doesn't have what it
takes. Bump too hard and the OEM frame will bend. Trust us — we've done it. A
frame stiffener reinforces your frame enough to let you ride your 8" portals
with monster tires and no worries.
| Polaris RZR RS1 Portal Gear Suspension Recommendations | ||
|---|---|---|
| Max Tire Size | Required Suspension Setup with 8" Portals | |
| 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 | Gear reductions listed are general guidelines to maximize torque and maintain factory top speed. A larger than recommended gear reduction will result in more torque and lower top speed. Give us a call for more information. |
Patent # 11,299,042
FEATURE
- 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 hub fits all major bolt patterns
- Gear
reduction reduces stress on your drivetrain

Fitment
- Polaris RZR RS1 : 2018-2021
Wheel
Requirements:
- 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
