Wossner Audi A6 S4 B5 forged pistons 2.7L Bi-Turbo 81MM 8.5: 1 WS-K9091DA

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 81MM Stroke 86.40mm Wossner compression ratio (CR) 8.50: 1 Rod Lgth. 154.00 Dome volume (CC) & nbsp