JE Pistons Gen 3 Hemi 6.4L Apache 4.09in Bore 4.1cc Dome 0.927in Pin Dia - Set of 8

Forged in the USA using 2618 aluminum, these JE Pistons are built to handle the demands of a high-performance Gen 3 Hemi 6.4L Apache engine. The 4.090-inch bore size and 4.1cc dome volume are specific to this application, aiming to optimize combustion and power output. This set includes eight pistons, each designed with JE's proprietary Forged Side Relief (FSR) forging design, which helps minimize friction and reduce weight by using a narrower skirt and a shorter wrist pin.

Beyond the FSR design, these pistons feature an accumulator groove, depending on the specific application, which works to reduce pressure from combustion gases. This helps prevent ring flutter and improves the ring seal, leading to more consistent power delivery. Many applications also include a skirt coating that further reduces friction and wear on the piston skirts and cylinder walls, while also contributing to quieter operation. These pistons are engineered and machined 100% in the USA, reflecting JE Pistons' extensive experience in creating durable and high-performing engine components for racing and demanding street use.

When rebuilding or upgrading your Gen 3 Hemi, choosing pistons that are specifically designed for your engine and intended use is crucial for both durability and performance. These JE Pistons are a solid option for those looking to push their 6.4L Apache engine beyond stock specifications. Please note that these pistons are not CARB approved and cannot be shipped to California.