PISTON KIT 93-01 YZ80 46.00 A, WOSSNER 8239DA YAMAHA MX

The 46mm Bore Wossner Piston Kit (Part No. 8239DA) is a standard size forged piston engineered for Yamaha YZ80 models from 1993 to 2001. Precision-manufactured in Germany, this piston is designed for high strength and efficient heat transfer. Its elliptical shape optimises surface bearing during thermal expansion, distributing load evenly to help prevent piston failure.

Features

• Forged piston construction for superior strength

• Optimised combustion heat transfer to cylinder walls

• Elliptical design reduces localised pressure and distributes thrust loads evenly

• Designed to resist piston collapse under thermal expansion

• Manufactured in Germany

Specifications

• Bore Size: 46.00 mm

• Clearance: 0.05 mm

• Compression Height: 26.00 mm

• Stroke: 47.80 mm

• Displacement: 82 cm³

• Compression Ratio: 2-stroke (Wossner and OEM)

Cross-Reference OEM Part Numbers

• PROX 01.2107

Vehicle Fitments

• 1993 Yamaha YZ 80

• 1994 Yamaha YZ 80

• 1995 Yamaha YZ 80

• 1996 Yamaha YZ 80

• 1997 Yamaha YZ 80

• 1998 Yamaha YZ 80

• 1999 Yamaha YZ 80

• 2000 Yamaha YZ 80

• 2001 Yamaha YZ 80

Included Components

• Lock: CW14

• Pin: WP058

• Ring Set: RSB4600