PISTON KIT 99-18 YZ250 66.40 A, WOSSNER 8216DA YAMAHA MX, 2 RING PISTON

Piston kit 66.40mm Bore 66.35 Wossner 8216DA (STD)

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.A.WO (oro2u.com)
Wossner Piston Kit (PN# 8216DA) 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)

Cross reference numbers ONLY. [ 1P8-11631-00-A0 / 1P8-11631-00-B0 / 1P8-11631-00-C0 / 1P8 -11631-00-D0 + 5CU-11603-10-00 + 5UP-11633-00-00 + 93450- 19052-00 ]