PISTON KIT 87-08 YFZ350 64.25, WOSSNER 8075D025 YAMAHA ATV

This Wossner forged piston kit with a 64.25mm bore (64.19mm) is designed for Yamaha models including the YFZ350 Banshee (1987–2007), RD350 LC - YPVS (1980–1987), RD350 AC (1950–2014), and RZ350 (1982–1990). Manufactured in Germany, the piston is engineered for strength, efficient heat transfer, and uniform pressure distribution to prevent localized stress and piston collapse.

Features

• Forged piston construction for superior durability

• Optimized for effective combustion heat dissipation

• Elliptical design for even thrust load distribution under thermal expansion

• Made in Germany

Specifications

• Bore size: 64.25mm (64.19mm)

• Display volume: 347 cm³

• Stroke: 54.00 mm

• Clearance: 0.06 mm

• Compression height: 36.00 mm

• Theoretical weight: Not specified

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

Cross-Reference OEM Part Numbers

• Piston: 8075D025

• Lock: CW16

• Pin: WP027

• Ring Set: RSB6425 x 2

Vehicle Fitments

• Yamaha YFZ350 Banshee 1987–2007

• Yamaha RD350 LC - YPVS 1980–1987

• Yamaha RD350 AC 1950–2014

• Yamaha RZ350 1982–1990

• Yamaha RD350 1973–1975