PISTON KIT 92-98 YZ250 68.00 B, WOSSNER 8023DB YAMAHA KIT

This Wossner forged piston kit is intended for Yamaha YZ250 (1992–1998) and WR250 (1992–1999) two-stroke models, featuring a 68.01mm bore (+0.01mm oversize). Designed for high performance and longevity, the piston utilises an elliptical shape to enhance load distribution and thermal expansion tolerance, helping to reduce localised pressure points and prevent structural failure. Manufactured in Germany, it ensures efficient combustion heat transfer to cylinder walls for stable engine operation.

Features

• Forged piston for high strength and durability

• Elliptical profile improves uniform bearing surface under heat

• Reduces thrust load concentration and minimises risk of collapse

• Facilitates combustion heat transfer for consistent performance

• Made in Germany with precision engineering

Specifications

• Bore Size: 68.01mm (+0.01mm oversize)

• Actual Diameter: 67.95mm

• Compression Height: 36.00mm

• Stroke: 68.00mm

• Displacement: 246 cm³

• Piston Clearance: 0.06mm

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

Cross-Reference OEM Part Numbers

• Piston Kit Part No: 8023DB

• Lock: CW18

• Pin: WP033

• Ring Set: RSB6800 x2

• Rod: P2029

Vehicle Fitments

• 1992 Yamaha WR250

• 1992 Yamaha YZ250

• 1993 Yamaha WR250

• 1993 Yamaha YZ250

• 1994 Yamaha WR250

• 1994 Yamaha YZ250

• 1995 Yamaha WR250

• 1995 Yamaha YZ250

• 1996 Yamaha WR250

• 1996 Yamaha YZ250

• 1997 Yamaha WR250

• 1997 Yamaha YZ250

• 1998 Yamaha WR250

• 1998 Yamaha YZ250

• 1999 Yamaha WR250