Wossner BMW M3 3.2L 3-Ring 86.75MM 12.3: 1 forged pistons WS-K9038D025

Wossner pistons are made of the highest quality aluminum, digitally processed using high quality technology. Each piston has an optimized piston crown to improve filling and a specially selected wall shape for each application. The result is less clearance between the cylinder and a lighter piston. Set: Pistons, rings, pins and pin protectors Product detailed specification Bore size 86.75MM Stroke 91.00mm Wossner compression ratio (CR) 12.30: 1 Rod Lgth. 139.00 Dome volume (CC) & nbsp