Mahle MS Piston Set RB25DET 86.50mm Bore 71.7mm Stroke 121.5mm Rod 21mm Pin 11.5cc 8.5 CR Set of 6

Forged from 4032 aluminum alloy, these Mahle MS pistons are built for the demands of a performance RB25DET engine. The 86.50mm bore size is a common upgrade for rebuilding or modifying these engines, and the 11.5cc dish volume contributes to an 8.5:1 compression ratio. This CR is a solid choice for boosted applications, offering a good balance between power and reliability when paired with appropriate tuning.

Each piston weighs in at 353g, a well-balanced weight that contributes to smooth engine operation. The included 21mm wrist pins and the 121.5mm rod length are specified to work with the RB25DET's factory or common aftermarket crankshaft and connecting rod configurations. Mahle is a well-known name in engine components, and this set of six pistons is designed to be a direct replacement for your RB25DET build, ensuring proper fit and function.

When rebuilding your RB25DET, using a quality piston set like this Mahle MS series is crucial for engine longevity and performance. Remember that this piston set is not CARB approved and cannot be shipped to California. Always consult your engine builder or a professional mechanic for specific tuning and installation recommendations for your application.