PISTON KIT ROTAX SWM250 74.00, WOSSNER 8290DA

This Wossner forged piston kit features a 74mm nominal bore (actual 73.93mm) and is designed for ROTAX SWM250 models from 1979 to 1982. Engineered for two-stroke applications, it offers enhanced durability and thermal efficiency for high-performance engines.

Features

• Forged construction provides superior strength and reliability

• Designed for optimal heat dissipation from the combustion chamber to cylinder walls

• Elliptical shape ensures balanced bearing pressure and effective thrust load management

• Manufactured in Germany with high precision and quality control

Specifications

• Bore Size: 74mm (actual 73.93mm)

• Stroke: 57.50 mm

• Clearance: 0.06 mm

• Wossner Compression Ratio: 2 stroke

• OEM Compression Ratio: 2 stroke

• Compression Height: 34.00 mm

• Lock Part Number: CW18

• Pin Part Number: WP033

• Ring Set Part Number: RSB7400 x 2

Vehicle Fitments

• ROTAX SWM250 1979–1982