PISTON KIT 99-18 YZ250 66.40 B, WOSSNER 8216DB YAMAHA MX, 2 RING PISTON

Piston kit 66.41mm Bore 66.36 Wossner 8216DB (+0.01)

YAMAHA
YZ250 1999 - 2018,

• 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-W742.B.WO (oro2u.com)
Wossner Piston Kit (PN# 8216DB) 2 RING PISTON Yamaha YZ250 1999-13 66.4mm 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)