Mahle MS Piston Set 408ci 4.030in Bore 4in Stroke 6.250in Rod .927 Pin -6.5cc 9.5 CR - Set of 8

This Mahle MS Piston Set gives you a complete set of eight forged pistons designed for a 408 cubic inch Ford Small Block engine. These pistons feature a 4.030-inch bore and are built to work with a 4.000-inch stroke crankshaft and a 6.250-inch connecting rod. Each piston weighs in at 434 grams and uses a .927-inch wrist pin. The dish volume is -6.5cc, which, when combined with the other engine components, results in a 9.5:1 compression ratio. This set is a solid choice for rebuilding or upgrading your Ford Small Block's engine internals.

Mahle uses 2618 aluminum alloy for these pistons, a material known for its strength and durability, making it suitable for performance applications. The design accounts for a 1.245-inch compression height, ensuring proper geometry with the specified rod and stroke combination. This attention to detail in the piston's dimensions is crucial for optimal engine performance and longevity. When installing these, remember to consult your engine builder or Mahle's specific installation guidelines, as proper ring gap and piston-to-wall clearance are critical for these types of forged components.

This set is intended for performance engine builds and comes with the eight pistons. It's important to note that these pistons are not CARB approved and cannot be shipped to California. Additionally, they are subject to California's Proposition 65 warning.