Wossner 84.00mm (83.92mm) forged piston kit is designed for Husqvarna CR 390 and WR 390 models from 1977 to 1980. Engineered for durability and precision, this piston ensures efficient heat transfer and uniform expansion, reducing localized pressure and preventing piston collapse. Manufactured in Germany, it meets high-quality standards for reliable performance.

Features

• Wossner forged piston for superior strength and durability


• Optimized heat transfer for enhanced combustion efficiency


• Elliptical design for uniform bearing surface and reduced localized pressure


• Precision-engineered for reliable performance


• Made in Germany

Specifications

• Bore Size: 84.00mm (83.92mm)


• Oversize: 1.00mm


• Stroke: 71.00mm


• Clearance: 0.08mm


• Compression Ratio: 2-stroke


• Compression Height: 37.00mm


• Lock Part Number: CW18


• Pin Part Number: WP033


• Ring Set Part Number: RSC8400

Vehicle Fitments

• Husqvarna CR 390 (1977-1980)


• Husqvarna WR 390 (1977-1980)