Wossner Forged Piston for Yamaha YZ250 1999-2025

YAMAHA
YZ250 1999 - 2025,

• 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.

Wossner Piston Kit (PN# 8216DC) 2 RING PISTON Yamaha YZ250 1999-13 66.42mm Bore.
Lock P/N CW18
Pin P/N WP033
Ring Set P/N RSB6640 x 2
Rod P/N P2028

Display (cm3) 249
Hub stroke (mm) 54.10
Clearance (mm) 0.06
Wossner compression Ratio: 2 stroke
OEM Compression ratio: 2 stroke
Dome volume (cm3)
Compression height (mm) 28.00
Theorectical weight (G)