MOOSE RACING Countershaft Seal Kit - Yamaha 25-4032 Swingarm Bearing Kit Big Bore Piston for Twin

Big Bore Piston for Twin Cam

Kit includes stainless steel return spring

Impact absorbing EVA foam panels on thumb for additional impact performance

Alpinestars exclusive Dynamic Friction Shield (DFS) protectors feature advanced airflow ventilation and a dual density polymer mold construction for superior performance against repeat impacts as well as abrasion resistance Ergonomic stretch insert between thumb and palm offers flexibility

As used by Kawasaki's World Championship factory WSBK team

MOOSE RACING Countershaft Seal Kit - Yamaha 25-4032 Swingarm Bearing Kit Big Bore Piston for TwinKits include hardened steel bushing, an upgraded seal, an O ring (where applicable) and a snap ring or lock washer (where applicable) Made in the U. S. A.