PISTON KIT 88-91 DT200 66.40, WOSSNER 8070D040 YAMAHA DIRT

Wossner Forged Piston Kit 66.40mm Bore – Yamaha DT200R / WR200
This Wossner forged piston kit is designed for Yamaha DT200R (1988–1991) and WR200 (1992–1998) models, offering a 66.40 mm bore and piston diameter of 66.34 mm (+0.40 mm oversize). Engineered for 2-stroke engines, the piston features forged construction and an elliptical profile to ensure optimal heat transfer and structural stability during high thermal expansion. Manufactured in Germany for consistent quality and performance.

Features

• Forged piston for superior durability and strength

• Optimised heat transfer from combustion chamber to cylinder walls

• Elliptical design promotes even pressure distribution and reduces thrust stress

• Made in Germany for precision engineering

Specifications

• Bore Size: 66.40 mm

• Piston Diameter: 66.34 mm

• Engine Displacement: 195 cm³

• Stroke: 57.00 mm

• Clearance: 0.06 mm

• Compression Height: 29.90 mm

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

Cross-Reference Wossner Part Numbers

• Piston Kit: 8070D040

• Lock: CW16

• Pin: WP027

• Ring Set: RSB6640 x 2

Vehicle Fitments

• Yamaha DT200R (1988–1991)

• Yamaha WR200 (1992–1998)