Fits: Polaris RZR Trail 900 : 2021+ Upgrade your Polaris RZR Trail 900 with Super ATVs complete geared-reverse transmission for unmatched strength and reliability. It replaces the weak stock reverse chain with a reverse gear thats 3x stronger and includes upgraded pinion and snorkel gears (2.5x stronger), a reinforced 6-bolt bearing retainer, and a heavy-duty cast aluminum case. The design eliminates turf mode for better durability and offers optional gear reductions (up to 37.5%) to boost torque for larger tires and aggressive mods - no machine modifications required.
Features: Complete, assembled, drop-in, Turbo-style transmission Hob-cut, heat-treated, ground gears ensure perfect mesh Geared reverse 3x stronger than stock Extremely durable 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 Precision ground gears are mated perfectly for less wear and smoother operation Eliminates a major weak spot in the transmission Strengthens the entire drivetrain Upgraded transmission case More support ribs and gussets than stock Extra fins help keep your transmission cool More metal reinforcing the snorkel tube and axle output areas Includes all necessary seals No turf mode Multiple gear reductions available: Stock gear reduction 12.5% gear reduction 25% gear reduction 37.5% gear reduction available in several applications Refer to your owner's manual for oil requirements .