WOSSNER PISTON KIT 1997 YZ125 54.00, WOSSNER 8117DA YAMAHA MX 4XM-11631-30-A0

Piston kit 54mm Bore 53.94 Wossner 8117DA (STD)
YAMAHA
YZ125 1997,
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-W693.A.WO (oro2u.com)
Wossner Piston Yamaha YZ125 54 mm Bore (PN# 8117DA)
Lock P/N CW15
Pin P/N WP032
Ring Set P/N RSB5400
Rod P/N P2019 Display (cm3) 124
Hub stroke (mm) 54.50
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.
4XM-11631-30-A0, 693M05400