Wiseco forged pistons BMW E39 E46 M54B30 84.5MM 9.0: 1 US-KE325M845

Wiseco 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. This results in a smaller clearance between the cylinder and a lighter piston. Set: Pistons, rings, pins and pin protections Product detailed specification Bore size 84.50mm Stroke 89.60mm Wiseco compression ratio (CR) 9.0: 1 Rod Lgth. 135mm Dome volume (CC) & nbsp