Big Bore 52.95mm Piston Kit - "A" Size - For 02-23 Yamaha YZ85

For 02-23 Yamaha YZ85

• Bore Size: 52.95 mm
• California Prop 65 Warning: Cancer and Reproductive Harm - https://www.p65warnings.ca.gov/
• Compression Ratio: 13.8:1
• Piston Diameter: 52.95 mm
• Type: Piston Kit
• UPC: 8050444893579

• Two-stroke pistons are made from 4032 silicium
• Four-stroke pistons are made from 2618 silicium - the same material used to produce Formula 1 pistons
• Both include 3% copper in materials for better heat resistance
• All pistons are forged using a precision heat-treatment process that allows for production tolerances of just .005mm
• Forged piston tooling allows for the lightest available product
• Kits include antiwear coated piston, rings, pin and circlips