Manley Chrysler HEMI 6.4L 4.090in Bore 1.210in CD -12.5cc Dish Coated Extreme Pistons - Set of 8

If you're rebuilding a Chrysler HEMI 6.4L engine, these Manley Performance Extreme Pistons are a solid choice for serious builds. This set includes eight pistons, each featuring a 4.090-inch bore, a -12.5cc dish dome, and a 1.210-inch compression distance. They are specifically designed for the demands of high-performance HEMI applications.

Manley uses domestic 2618 alloy forgings for these pistons, which are known for their superior strength and ability to handle the stresses of powerful engines. The pistons feature proven cam and barrel skirt profiles, designed to generate substantial power while minimizing wear on your cylinder walls. You'll also find exacting standards applied to the ring lands and grooves, which is crucial for achieving a better ring seal and unlocking more power from your engine. For added durability, these pistons come with tool steel wrist pins, and Manley's unique fixturing process ensures the ring grooves are perfectly square to the skirt in a single operation.

These pistons are not CARB approved and cannot be shipped to California. They are part of Manley's signature "Platinum Series," trusted by professional engine builders and tuners for their performance and durability.