Wossner Complete forged B-rib Piston kitYAMAHA 250 YZ 250 - 1980 - 1982Ref : WO00179A / 1093606003

WOSSNER Forged piston reference 8180D100: machined aluminum piston for 2-stroke engines. Designed and manufactured in Germany by specialists in engine parts, this forged piston is aimed at riders looking for a robust and precise component for restoring or preparing their off-road machine.

• Forged aluminum piston, anti-friction treated skirt
• Bore diameter: 71.00 mm — piston diameter: Ø 70.94 mm
• Oversize letter: 100
• Number of rings: 2 (delivered with rings, circlips, and pin)
• Universe: Cross — suitable for YAMAHA YZ 250 (1980–1982) and similar machines

The forged design ensures a homogeneous piston structure, suitable for the stresses of high RPMs and the demands of motocross practice. The skirt treatment reduces friction against the cylinder for safer performance during temperature increases. The part is supplied complete with ring(s), circlips, and pin for easier installation.

Ideal for the restoration or engine preparation of vintage YZ 250s, this WOSSNER piston provides the dimensional precision and machining quality necessary for reliable track performance. Check the compatibility of the dimensions before installation.