Pistons - 4785M09500 12.5:1 Piston

4785M09500 12.5:1 Piston

• California Prop 65 Warning: Cancer and Reproductive Harm - https://www.p65warnings.ca.gov/
• Type: Piston Kit
• UPC: 193564140562

Piston Kit - Standard

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• Pistons come without gasket kit

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Wiseco Yamaha YZ450F 03-09/WR 03-15 12.51 CR Piston kit

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These kits offer lightweight forging for instant throttle response and maximum torque. Computer engineered piston skirt profiles provide minimal cylinder wall friction. Anti-detonation grooves and ring land diameter eliminates ring blow-by while maximizing engine performance. . . 4-Stroke Pistons: Dedicated forging for lightweight and superior strength; Race ready dome design for improved combustion flow Armor glide skirt coating provides reduced friction (racing applications only); Piston kit includes piston, rings, wrist pin and circlips Oversize requires cylinder sleeving.. . Racer's Choice: Pistons are single-ring 2-Stroke or two ring 4-Stroke; Reduced weight and friction with increased power and throttle response; Service intervals may be increased over conventional Wiseco Pistons.. . 2-Stroke Pro-Lite Pistons:.