Description Polini HQ piston pin bearingHigh-quality reinforced small end bearings from the renowned Polini brand. Simply select the right size from the drop-down menu.polini reinforced needle bearing - Available sizes:ReferenceInner diameterOuter diameterLengthApplicationP143.195.00210mm13mm14,5mmPiaggio Bravo / SiP280.001710mm14mm13mmMinarelli, PGOP280.001912mm15mm15mmDerbi Senda, AM6; PeugeotP280.001212mm17mm15mmPiaggioP280.001415mm19mm20mmAprilia 125 / Vespa Primavera / ET3 125 Questions about the product

• Brand: Polini
• SKU: P280.0017
• Availability: In stock

Notes and Safety What is a Small end bearing?The small end bearing or piston pin bearing is a needle bearing; the rolling elements used are cylindrically shaped needle rollers. It works similarly to all bearings, reducing friction and increasing the life of the crankshaft and the cylinder.The small end bearing takes in the piston pin and reduces friction between the piston pin and connecting rod by distributing the load over a larger area.The small end bearing plays a vital role in the reliability and longevity of the engine, so it is important to replace and lubricate it well each time you reassemble the engine.