Premium crankshaft bearing and oil seal set from Polini, engineered for high-performance racing applications across Piaggio, Gilera, Aprilia, and Vespa platforms.

Built with precision-grade NTN C4 bearings featuring steel cages for durability under extreme conditions. The included oil seals are manufactured from premium Viton material with superior thermal and chemical resistance, ideal for demanding engine environments.

Polymer-coated lips reduce friction and wear, extending component lifespan and maintaining reliability. Perfect for race-tuned engines or as OEM-compatible replacement parts for stock configurations.

Set includes : 

• 2x crankshaft bearings with steel cage (NTN C4 - SCO4A47), 20x52x12mm
• 2x oil seals - 18x28x7mm and 19x30x7mm