Polaris RZR Pinion Bearing Retainer

Heavy-Duty Pinion Bearing Retainer for the Polaris RZR

Replace the factory pinion bearing retainer in your Polaris RZR transmission with a heavy-duty upgrade machined to tighter tolerances. This retainer maintains proper bearing preload and sealing, addressing a known weak point in the stock drivetrain.

Precision-Machined Fit
This pinion bearing retainer is CNC-machined from high-strength steel to exact dimensional specifications. The tighter tolerances compared to the factory part ensure consistent bearing seat alignment, which directly affects pinion gear mesh and transmission longevity.

Maintains Bearing Preload
Proper pinion bearing preload is critical to transmission life. This retainer maintains the designed preload range under the thermal cycling and shock loads that cause stock retainers to loosen or distort. Consistent preload means quieter operation and longer bearing life.

Integral Seal Surface
The retainer provides a precision-finished seal surface that prevents transmission fluid from leaking past the pinion shaft. A clean seal surface eliminates the weeping and dripping that indicate a worn or out-of-spec factory retainer.

Direct Replacement
This pinion bearing retainer is a direct replacement for the factory part in the Polaris RZR transmission. It matches the original mounting dimensions and bolt pattern for a drop-in swap with no modifications required.