Supertech BMW B58 82mm Bore 36cc 11:1 CR Pistons - Set of 6 (Excl Rings)

Supertech BMW B58 82mm (or 82.5mm on some sites) Bore 36cc 11:1 Compression Ratio Forged Pistons - Set of 6 (Excludes Rings). These pistons are crafted from enhanced 4032 aluminum alloy with high silicon content, plus added copper, nickel, and magnesium for low thermal expansion, superior wear resistance, and improved heat dissipation. They feature a multi-stage heat treatment process for even hardness distribution and high tensile strength, capable of enduring up to 42 psi of turbo boost on alcohol fuels without failure. Designed with a slipper skirt style for reduced friction and weight. Professional installation, including block boring/honing, and proper ring gapping are required. Not CARB-legal.