Piston Kit 56.00mm Bore 55.94 Wossner 8072D200 (+ 2.00) YAMAHA
YZ125 2002-2004, 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-W797.200.WO
Lock P/N CW15
Pin P/N WP032
Ring Set P/N RSB5600
Rod P/N P2017 Display (cm3) 125
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.
Piston (Std) UR 5NY-11631-01-D0
Piston (Std) UR 5NY-11631-01-C0
Piston (Std) UR 5NY-11631-01-B0
Piston (Std) UR 5NY-11631-01-A0
Ring, 5NY-11611-00-00
Pin, 5UN-11633-00-00
Circlip 93450-16068-00