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SuperATV  |  SKU: TRAN-P-RZR900-K201#DC

Polaris RZR Trail S 900 Complete Heavy Duty Transmission



A Better Transmission for Your RZR
We never want you to take it easy behind the wheel of your Polaris RZR Trail S 900. That’s why we designed our Complete Heavy-Duty Transmission—it’s stronger than your OEM transmission, so slipped gears and transmission issues will become a thing of the past. Each one is made to order before being put through vigorous lab and field testing. We include lapped gears for perfect meshing and upgraded internals, all housed in an ultra-strong case. This Polaris transmission replacement is the best way to power through riding conditions that would have blown your OEM tranny to shreds.

An Upgraded Reverse Chain
We’ve upgraded your RZR’s reverse chain by making it thicker and twice as strong as stock. Our double reverse chain will last longer and handle much wilder reversing scenarios without breaking. Go ahead and throw it into reverse whenever and however you want—you’ve got SuperATV on your side.

Better Pinion and Snorkel Gears
There’s no pinion and snorkel gear set tougher than ours. These gears are made using 9310 alloy steel—it’s strong enough for aircraft, so you can bet it’s strong enough for your RZR, too. We also use 300M steel for the front output shaft. These materials are impressive, but our design is even more so. By lapping the gears, we ensure that they’re perfectly mated and broken in together. That gives you cool and strong operation, ride after ride.

Improved Pinion Bearing Retainer
The stock bearing retainer is one of the biggest weak spots on your OEM transmission. Without the right amount of strength, there’s a chance your pinion gear could pull away from the snorkel gear and break. That’s why our transmissions come with a heavy-duty pinion bearing retainer. It holds your gear firmly in place, making every ride better.

Ultra-Tough Transmission Case
The case is arguably the most important part of a transmission because it’s what keeps everything else safe and in place. Ours use 68% more metal on the axle output and snorkel tube to give you max strength where your tranny needs it the most. We add additional support ribs and gussets for added strength and to keep everything running cool.

How About a Gear Reduction?
Our Polaris RZR Trail S 900 transmission comes with multiple gear reduction options. Choose from stock, 12.5%, 25%, and 37.5% to get the perfect amount of torque for the way you ride. Do you want to pile on some extra weight and roll on bigger tires? The bigger the gear reduction, the easier that will be. You’ll especially appreciate the added force on rough trails or in thick mud.

NOTE: Make sure to match the OEM part number on your current transmission. To find the part number on your OEM transmission refer to our last product photo. We are not responsible for incorrect ordered transmissions, fees may apply to any returned transmission.

WARNING: 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.

⚠ California Proposition 65 Warning ⚠
WARNING: This product may contain a chemical known to the State of California to cause cancer or birth defects or other reproductive harm.


  • Complete, assembled, drop-in transmission
  • Built to order and thoroughly tested
  • Upgraded snorkel gear set
    • Pinion shaft and gears made with 9310 heavy-duty steel
    • Front output shaft made with 300M
    • 2.5x stronger than stock
    • Lapped gears are mated perfectly for less wear and smoother operation
    • Strengthens the entire drivetrain
  • Upgraded reverse chain
    • 2x stronger than stock
    • Quieter than the competition
  • Upgraded transmission case
    • More support ribs and gussets than stock
    • Extra fins help keep your transmission cool
    • 68% more metal reinforcing the snorkel tube and axle output areas
  • Multiple gear reductions available
    • Stock gear reduction
    • 12.5% gear reduction
    • 25% gear reduction
    • 37.5% gear reduction
Polaris RZR Trail S 900 : 2021+

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