5up-11311-20-00 OEM Block Wossner 8217DA Piston Prox Gasket Kit For 2003-2015 Yamaha YZ250 yz 250

• In-house designed and manufactured; all forgings are produced in Wössner's company-owned forging operation
• Lightweight pistons with the tightest piston-wall clearances in the industry give you a quieter running engine
• Standard and oversize pistons for most models, with high compression ratios available for 4-stroke applications
• All piston kits include piston, ring, wrist pin and pin locks
• Wössner piston kits are used by leading Supercross, Arenacross and MX GP teams
• Pistons: include piston, rings, pin and clips
• Piston made with high quality, permanent skirt coating to reduce friction and piston rock for quiet and improved performance
• 4032 T6 Forged Aluminum Alloy
• German Engineered from Wossner’s own designs and forgings
• Use FEA (computer simulation) to fine tune every design
• T6 Heat Treated for Heat Resistance & Durability for High- Load Use

(1) Piston

(1) Wrist pin

(2) Cir-clips

(1) Piston ring

Instructions

• Includes all necessary top-quality gaskets, rubber parts and valve stem seals to rebuild top-end and complete engines, respectively

(1) Valve seat gasket

(1) Crankcase cover gasket No. 3

(1) Crankcase cover gasket No. 1

(1) Water pump gasket

(1) Carburetor cover gasket 2

(1) Cylinder gasket

(1) Housing gasket

(1) Cover gasket

(12) O-Rings (assorted sizes)

(1) 32x42x8 Seal

(1) 18x30x6 Seal

(1) 12x25x7n Seal

(1) 12x22x6 Seal

(2) 12x18x5 Seals

(1) 8x12x3n Seal

No instructions