Piston kit 69mm Bore 68.94 Wossner 8023D100 (+1.00)
YAMAHA
YZ250 1992 - 1998,
WR250 1992 - 1999,  
Wossner forged pistons are superior in strength and design. Engineered to provide the best possible path for combustion chamber heat transfer to cylinder walls. Elliptically designed to provide a more uniform bearing surface under piston heat expansion, eliminating localized pressure and distributing thrust loads more evenly, thereby preventing piston collapse. Made in Germany Part No. 56-W677_100_WO
Wossner Piston Yamaha YZ250 69 mm Bore (PN# 8023D100)
Lock P/N CW18
Pin P/N WP033
Ring Set P/N RSB6850 x 2
Rod P/N P2029 Display (cm3) 246
Hub stroke (mm) 68.00
Clearance (mm) 0.06
Wossner compression Ratio: 2 stroke
OEM Compression ratio: 2 stroke
Dome volume (cm3)
Compression height (mm) 36.00
Theorectical weight (G)