WÖSSNER Pro Series forged piston designed for engine rebuilds and replacements on roadsters. Made in Germany by specialists in engine components, this aluminum piston features a forged construction suitable for the demands of a modern 2- or 4-stroke engine while maintaining the original architecture of the engine.
- Manufacturer reference: 8505DA
- Material: Forged aluminum
- Piston diameter: Ø 86.930 mm (oversize letter A)
- Recommended bore diameter: 87.00 mm
- Compression: Standard
- Finish: Anti-friction treated skirt
- Delivered with: rings, circlips, and pin
Designed for replacement installation, this Pro Series piston is aimed at riders looking for a robust and precisely machined engine part. The treated skirt reduces friction during startup and when hot, facilitating break-in and integration into the chamber. Compatible with several classic roadsters, including Yamaha XT 500 (1989), Yamaha SR 500 (1989), and Yamaha XT 400 (1981) according to bore matching.
Before installation, check the alignment of bore tolerances and adhere to manufacturer recommendations for piston/ring clearance. Part delivered ready for installation for a restoration true to the original.
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