Piston ring (Race Kit) $ 55.00 SKU: TZ250 Race Kit Piston Ring Piston ring to suit the TZ250 race kit piston. Back to: Top End and Crankshaft ×Close Yamaha Yamaha is a leader in businesses ranging from musical instruments and audio & video products to information technology products, new media services, home furnishings, auto components, specialty metals, music education and resort facilities. http://www.global.yamaha.com/ Description This piston ring will suit the TZ250 race kit forged piston only. Thickness = 0.75mm