
The WÖSSNER forged piston (manufacturer reference 8645DA) is designed for demanding riders who are overhauling the top end of their motocross bike. Forged in Germany and machined to nominal tolerances, this aluminum piston features an anti-friction treatment on the skirt to limit wear during the first kilometers after reassembly. Supplied complete, it includes rings, circlips, and pin for quick installation.
Designed for motocross applications, this piston is suitable for refurbishment or engine preparation where a quality performance part is sought. Its skirt finish and dimensional precision facilitate fitting to the bore and controlled bedding-in. Examples of common compatible models: KTM 250 EXC-F SIX DAYS (2013), HUSABERG FE 250 (2013), KTM 250 EXC-F (2013) — always check the engine reference before ordering.