Polini Crank Bearings & Seals (DRR-APEX)Key Features and Specifications: Kit Includes: 2x Crankshaft Bearings (20x52x12 mm), 2x PTFE FKM Oil Seals (sizes 18x28x7 and 19x30x7). Application: Ideal for stock and high performance, upgraded, or racing engines. Compatibility: Fits a wide range of scooters, including MBK Booster, Yamaha Vino, Aprilia Area 51, and Malaguti Ciak. Benefits: Designed for lower friction, higher RPM capacity, and improved heat resistance compared to standard seals. The
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