Wossner Piston Kit - 76.96 Mm - Yamaha 8712Da

• Enhanced piston pin oiling slots, radial boss machining, and annular grooves for improved wrist pin lubrication • Lightweight piston with a tight piston wall clearance for a quieter running engine • Skirt coated for reduced friction and improved break in performance • Ring land treatment for improved ring seal and oil control • Double bridged forging design where noted • Kit includes piston, rings, wrist pin and pin locks - Yamaha YZ 250 F (2010, 2009, 2013, 2011, 2008, 2012)