
WÖSSNER Forged Piston - Manufacturer Ref. K4016D400-2
Forged aluminum piston, machined in Germany by Wössner for urban and roadster applications. Designed for cylinder-side replacement with a skirt finish treated for anti-friction, it fits into two-stroke and four-stroke engines requiring a specific oversize. The piston is supplied with the necessary rings, circlips, and pin for a complete top-end rebuild.
Replacement part suitable for urban scooters and maxi-scooters — compatible notably with YAMAHA T-MAX 500 (SJ06 2011, SJ05 2007, SJ03 2006) in 500 cc version. Useful reference for orders and fit verification: K4016D400-2. For safe installation, adhere to bore tolerances and manufacturer recommendations during break-in and tightening.