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Wossner Piston Kit 8188DC is a precision-forged piston engineered for Yamaha YZ80 models from 1993 to 2001 with a 47.02mm bore (+0.02 US Bore). Designed in Germany, it provides superior thermal and mechanical performance. Its elliptical profile ensures uniform surface contact under heat expansion, distributing loads evenly and reducing stress points, which helps prevent piston failure under demanding conditions.
Features
Forged construction enhances durability and structural strength
Elliptical design maintains consistent bearing surface during thermal expansion
Optimised heat transfer from combustion chamber to cylinder walls
German engineering and manufacturing
Specifications
Bore: 47.02 mm
Actual Piston Diameter: 46.97 mm
Stroke: 47.80 mm
Displacement: 82 cm³
Clearance: 0.05 mm
Compression Height: 26.00 mm
Wossner Compression Ratio: 2-stroke
OEM Compression Ratio: 2-stroke
Cross-Reference OEM Part Numbers
Wossner Piston: 8188DC
Lock: CW14
Pin: WP058
Ring Set: RSB4700
Rod: P2008
Internal Part No: 56-W646+00C.WO
Vehicle Fitments
1993 Yamaha YZ80
1994 Yamaha YZ80
1995 Yamaha YZ80
1996 Yamaha YZ80
1997 Yamaha YZ80
1998 Yamaha YZ80
1999 Yamaha YZ80
2000 Yamaha YZ80
2001 Yamaha YZ80