If there is one weak spot in your RZR transmission it is your pinion bearing retainer, often called a pinion bearing plate. Let’s face it, the factory retainer just can not stand up to the pressure of these high horsepower machines. Couple that horsepower with bigger tires and extreme riding conditions, something has to give right? The piece that often gives is the factory pinion bearing retainer, which in turn allows your pinion shaft and snorkel shaft (output shaft) to push away from each other. When this happens it equals disaster! Whether this has already happened to you, or you want to prevent it from happening, we have the answer. Our Extreme Duty Pinion Bearing Retainer is not only precision cut from some of the strongest material available, we have added material in all the right places making our pinion bearing retainer more than a 100% stronger than factory! Fix your RZR transmission before it breaks and don’t be the next victim! Already busted your transmission? Check out our complete line of transmission upgraded bearings.