Mahle MS Piston Set Porsche 356 86.0mm Bore 74mm Stroke 135.95mm Rod 22mm Pin 18.7cc 9.5CR Set of 4

Mahle's MS Piston Set for the Porsche 356 features a specific 86.0mm bore diameter, designed to match the original specifications for a precise fit. These pistons are crafted from a well-built aluminum alloy, chosen for its balance of strength and light weight, which is crucial for engine performance and longevity. The set includes four pistons, each engineered with a 74mm stroke and a 135.95mm rod length, contributing to the engine's overall displacement and power delivery. With a 22mm pin diameter and a dish volume of 18.7cc, these pistons achieve a 9.5:1 compression ratio, a notable increase over stock that can enhance power output when paired with appropriate tuning.

This piston set is a popular choice for rebuilds where performance and reliability are key. The Mahle MS series is known for its robust construction, utilizing advanced forging techniques to create pistons that can withstand the higher stresses of performance applications. The precise machining ensures a smooth surface finish, which helps reduce friction within the cylinder bore, contributing to improved efficiency and a longer lifespan for the engine components. Installing these pistons is a significant step in rebuilding or upgrading the Porsche 356 engine, aiming for improved responsiveness and power.

When undertaking an engine rebuild with these pistons, it's important to ensure all other engine components are in good condition and properly balanced. This includes the crankshaft, connecting rods, and cylinder head. Proper balancing is essential for smooth operation and to prevent premature wear. Always refer to the manufacturer's detailed installation instructions for specific clearances, ring gap settings, and lubrication requirements to ensure optimal performance and durability. Please note that this part is not CARB approved and cannot be shipped to California.