Tecnium Full forged size A Piston kitRef : 8631DA / 1093775001

WÖSSNER Pro Series Forged Piston – Manufacturer Ref. 8631DA

Manufactured in Germany by engine parts specialists for 2 and 4-stroke engines, this Wössner forged piston is designed for motocross preparations and 450 cc displacements seeking a robust and precise component. Made from high-quality aluminum with an anti-friction coating on the skirt, it withstands the stresses of intensive use while facilitating fitting and break-in.

• Type: forged piston
• Compression: high compression
• Bore diameter: 95.00 mm
• Piston diameter: Ø 94.960 mm (oversize A)
• Material: aluminum
• Supplied with: ring(s), circlips, and pin

Ideal for prepared motocross engines, this piston fits configurations requiring an oversize A to accommodate a fresh bore. Its treated skirt minimizes friction and contributes to a smooth engine behavior during warm-up and high RPM phases. Installation and clearance checks are essential to ensure optimal operation.

Common compatibilities: YAMAHA WR 450 F (DJ03, CJ13) and YAMAHA YZ 450 F (CJ10) — verify the reference and dimensions before installation.