Mahle MS Piston Set Porsche 356 86.0mm Bore 74mm Stroke 135.95mm Rod 22mm Pin 21.8cc 9.5CR Set of 4

Mahle is a well-known name in engine components, particularly for their piston designs. This Mahle MS Piston Set is built for the Porsche 356, offering a specific bore size of 86.0mm. These pistons are designed to work with a 74mm stroke and a 135.95mm connecting rod, featuring a 22mm wrist pin. The set includes four pistons, each with a 21.8cc dish volume, resulting in a 9.5:1 compression ratio when installed.

These pistons are forged, which means they start as a solid block of aluminum that is heated and then pressed into shape. This process creates a stronger, more durable piston compared to cast aluminum, making them a solid choice for rebuilding or upgrading the engine in your Porsche 356. The 9.5:1 compression ratio is a common target for performance-oriented builds, offering a good balance between power and drivability for these classic vehicles. The 22mm wrist pin is a standard size for many performance applications, ensuring good compatibility with various connecting rods.

When rebuilding an engine, it's important to ensure all components are clean and properly lubricated before installation. This set is designed as a direct replacement for the original pistons, but always refer to the manufacturer's installation instructions for specific details. Please note that this part is not CARB approved and cannot be shipped to California. It also carries a Prop 65 warning.