Wossner Complete forged A-rib Piston kitRef : 8104DA / 1093538001

Complete Forged Piston Kit Size A by Wossner

This Wossner forged aluminium piston kit is designed for motocross engines. Its treated anti-friction skirt helps to reduce wear and maintain consistent engine performance. It comes with the ring, circlips, and pin for easy replacement.

Design and Materials

• The forged aluminium construction provides the mechanical strength required for the demands of a motocross engine.
• The anti-friction treatment of the skirt limits wear to promote regular engine use.

Installation and Assembly

• The piston is supplied with the ring, circlips, and pin to ensure all necessary components for assembly are included.
• Checking the thickness of the ring, the condition of the cylinder, and the bore size helps to ensure an appropriate piston clearance before installation.
• The piston diameter of 47.45 mm in size A facilitates verification of compatibility with the engine bore.
• The manufacturer reference 8104DA allows for precise identification of the part during replacement.

Usage and Performance

• Heat resistance and rotational stress handling meet the demands of motocross engines.
• The guiding precision within the bore promotes consistent engine behaviour during operation.

Examples of Compatible Motorcycles

• YAMAHA YZ 85 LW BIG WHEELS 19/16 (2026)
• YAMAHA YZ 85 (2026)
• YAMAHA YZ 85 (CB09) (2012)

Complete list of compatible motorcycles available in the dedicated section below