Mahle MS Piston Set Por 993 RSR Style 102mm Bore 76.4mm Stk 127mm Rod 23mm Pin 38.1cc 11.4CR Set 6

Mahle's MS Piston Set for the Porsche 993 RSR style application features a 102mm bore, designed to work with a 76.4mm stroke and a 127mm rod length. This set uses a 23mm pin and has a compression ratio of 11.4:1, with a 38.1cc dish volume. These pistons are forged from a high-strength aluminum alloy, a common choice for high-performance engines because it offers a good balance of strength and light weight. The forged construction means the aluminum's grain structure is aligned during manufacturing to resist the extreme pressures and temperatures found in performance racing engines, like those in RSR-style builds. This specific design is intended for builders looking to achieve a significant performance increase over stock, often as part of a larger engine rebuild or modification project. The 11.4:1 compression ratio is a notable step up from many factory configurations, requiring careful attention to fuel octane and engine tuning to perform optimally and safely. Mahle is a well-known name in engine components, and this set reflects their focus on precision and durability for demanding applications.

When installing this set, it's crucial to ensure all related engine components are in excellent condition. This includes the cylinder walls, crankshaft, connecting rods, and the engine's valvetrain. Proper balancing of the rotating assembly is also essential for smooth operation and longevity, especially with performance pistons. Because these are not CARB approved, they cannot be shipped to California. Always refer to the manufacturer's detailed installation instructions and consult with a qualified engine builder to ensure correct assembly and tuning for your specific application.