PISTON KIT YZ85 YZ80 49.00, WOSSNER 8188D200 YAMAHA MX

Wossner Piston Kit 8188D200 is a forged performance piston designed for Yamaha YZ80 models from 1993 to 2001, featuring a 49.00mm bore (+2.00 US Bore). This German-manufactured piston offers excellent thermal management and mechanical reliability. Its elliptical profile provides a consistent and uniform bearing surface during thermal expansion, minimising high-stress zones and reducing the risk of piston collapse during intense use.

Features

• Forged construction delivers high durability and strength under extreme load

• Elliptical design reduces localised pressure and distributes thrust evenly

• Enhanced heat dissipation from combustion chamber to cylinder walls

• Precision engineering and manufacturing in Germany

Specifications

• Bore: 49.00 mm

• Actual Piston Diameter: 48.95 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: 8188D200

• Lock: CW14

• Pin: WP058

• Ring Set: RSB4900

• Rod: P2008

• Internal Part No: 56-W646+200.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