Mahle MS Piston Set SR20DET 86.50mm Bore 86.0mm Stroke 136mm Rod 22mm Pin -11.5cc 8.5 CR Set of 4

Forged from 4032 aluminum alloy, these Mahle MS pistons are built for the demands of a performance SR20DET engine. The 86.50mm bore size is a common upgrade for those looking to increase displacement, paired with an 86.0mm stroke and a 136mm rod length. This combination is designed to work with the engine's stock stroke and rod, making it a straightforward choice for a rebuild or performance build.

Each piston features a -11.5cc dish volume, which helps achieve a calculated compression ratio of 8.5:1 when used with the stock SR20DET configuration. This CR is a good balance for boosted applications, allowing for safe power gains without excessive detonation risk. The 22mm wrist pin diameter is standard for many performance applications, ensuring compatibility with a wide range of connecting rods. At 309g each, these pistons offer a well-balanced weight for smooth engine operation.

This set includes four pistons, all the necessary components for a complete engine rebuild. Please note that these pistons are not CARB approved and cannot be shipped to California. Always refer to manufacturer installation instructions for proper fitment and assembly procedures.