Wossner forged Piston kitRef : WO00234A / 1093678002

WÖSSNER Forged Piston – Manufacturer Ref: 8291D050

Wössner forged piston, manufactured in Germany by a specialist in engine parts for two-stroke and four-stroke engines. Designed for modifications and replacements on road and trial engines, this aluminum piston features a meticulous finish and a skirt treated for anti-friction to reduce friction during acceleration.

• Material: forged aluminum
• Recommended bore diameter: 72.50 mm
• Piston diameter: Ø 72.44 mm (oversize letter 050 → +0.50 mm)
• Number of rings: 1
• Delivered complete: ring(s), circlips, and piston pin

This piston is aimed at motorcyclists looking for a robust replacement part for roadster engines and vintage/trial models. The forged construction ensures uniformity of the alloy and mechanical strength suitable for the thermal and mechanical stresses common at high RPMs. The reference 8291D050 corresponds to an oversize of +0.50 mm — check the bore of your cylinder before installation.

Examples of compatibility: Bultaco Sherpa Trial 250 (1983), Bultaco Pursang 250 (1980), Bultaco Alpina 250 (1980). Installation and adjustments: adhere to the manufacturer's tolerances and recommendations during installation.