WÖSSNER Pro Series Forged Piston – Manufacturer Ref. 8924DA

Designed and manufactured in Germany by Wössner, this Pro Series forged piston is aimed at motocross enthusiasts looking for a professional-grade replacement engine part. The forged design ensures a denser and more homogeneous structure than cast pistons, a quality often sought after for engines used on tracks and trails.

• Bore diameter: 78.00 mm
• Piston diameter: Ø 77.950 mm (clearance ≈ 0.05 mm)
• Oversize letter: A (piston for oversize bore)
• Material: forged aluminum
• Number of rings: 2
• Anti-friction treatment on the skirt
• Delivered complete: rings, circlips, and pin

The skirt features an anti-friction treatment to minimize friction at the cylinder clearance, while the two rings ensure the piston’s sealing within its bore. The kit is delivered ready to install with pin and circlips, simplifying the piston/ring replacement during engine service.

Compatible with the motocross universe and suitable for many modern 250 cc models — for example, KTM 250 SX-F (2022), Husqvarna FC 250 (2022), and GAS GAS MC 250 F (2022) — this Wössner Pro Series piston is a serious option for preparations and replacements on off-road motorcycles.