Introducing the Upgraded Reverse Transmission for Your Polaris RZR 900 Your RZR™s transmission is the most important part of the drivetrain. That™s why you need to ditch your stock transmission. From a weak reverse chain to a fragile case, you need to upgrade. That's where our turbo-style geared-reverse transmission comes in. It™s designed specifically for your Polaris RZR 900 and upgrades everything. You get the biggest, beefiest tranny possible, and it drops in with zero modifications. Geared reverse eliminates stock™s reverse chain Upgraded pinion and snorkel gears Upgraded pinion bearing retainer Upgraded case Optional gear reductions Geared Reverse: 3 Times Stronger The stock reverse chain is more like a rubber band”we™ve broken tons of them. That's why we've replaced it with a reverse gear that's 3 times stronger. Now, you can throw it in reverse anywhere without worrying about snapping your chain. Pinion and Snorkel Gear: 2.5 Times Stronger than Stock We also upgraded the pinion and snorkel gear set. They™re bigger and stronger”2.5 times stronger than stock. They come complete with a 300M output shaft so you can have the confidence to hit the gas hard. Upgraded 6 mm Pinion Bearing Retainer Strong gears are useless without a reliable retainer to keep them in place. That's why we've added a thick 6 mm retainer with a six-bolt pattern. This larger retainer ensures that your gears mesh perfectly so your RZR 900 tranny won™t fail. A Reinforced Case Our upgraded case enhances overall strength. We've added more material around the snorkel area to strengthen OEM™s biggest weak spot. We also added fins and gussets to provide even more strength and help maintain optimal case temperature. It™s all tough as nails. No Turf Mode! Our geared reverse does not include turf mode. That means that if you have it on your stock machine, this transmission deletes it. That™s because turf mode is a serious weak spot, and can cause failures even when you™re not using it. Choose Your Ideal Gear Reduction Need more torque? We offer torque-boosting gear reduction options: stock, 12.5% reduction, 25% reduction, and 37.5% reduction. Gear reductions make big tires roll easier and give you the power to ride with heavy portals and lifts.