What material are these JE Pistons made from?

These pistons are forged in the USA from 2618 aluminum. This material is selected for its high tensile strength, which is necessary for high-demand performance applications.

What is the purpose of the Forged Side Relief (FSR) design?

The FSR forging design is intended to minimize friction and power loss. It achieves this through a reduced skirt width and a shorter wrist pin, which also helps to save weight.

Are these pistons compatible with all 5.4L 4V Modular engines?

These pistons are designed specifically for the 5.4L 4V Modular engine. While they are intended for this engine family, it's always best to verify compatibility with your specific engine build and any modifications you may have.

JE Pistons 5.4 4V Modular 8.5:1 Piston Set 314687

Name: JE Pistons 5.4 4V MODULAR 8.5:1 Set of 8 Pistons
Brand: JE Pistons
SKU: je-pistons-je-pistons-5-4-4v-modular-8-5-1-set-of-8-pistons-t14-296568
Price: 950.07 USD
Availability: BackOrder

JE Pistons 5.4 4V MODULAR 8.5:1 Set of 8 Pistons

$950.07

On Backorder

Order now to reserve yours — we'll ship as soon as stock arrives. Full refund if we're unable to fulfill.

JE Pistons 5.4 4V MODULAR 8.5:1 Set of 8 Pistons. Forged in the USA for high-demand performance.

Key Features

This is a set of 8 pistons.
Forged in the USA using 2618 aluminum for high tensile strength.
Features a proprietary Forged Side Relief (FSR) design to minimize friction and power loss.
Includes a 3.552-inch bore size and a -27.7cc dish volume.
Designed specifically for the 5.4L 4V Modular engine application.
Achieves an 8.5:1 compression ratio.

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Product Details

This is a set of eight forged pistons from JE Pistons, designed for the 5.4L 4V Modular engine with an 8.5:1 compression ratio. These pistons are made in the USA from 2618 aluminum, a material chosen for its high tensile strength, which is crucial for engines built for demanding performance applications. You'll receive the pistons themselves, ready for installation into your engine build.

JE Pistons brings over 75 years of experience to their forged piston designs. This set features a proprietary Forged Side Relief (FSR) forging design, which helps minimize friction and power loss by using a reduced skirt width and a shorter wrist pin, also saving weight. Depending on the specific application, these pistons may also include an accumulator groove to help manage combustion gas pressure, improving ring seal and maintaining consistent power. Some applications also benefit from a skirt coating that reduces friction and wear on the piston skirts and cylinder walls, which can also lead to quieter operation.

These pistons are specifically designed for the 5.4L 4V Modular engine, ensuring optimized performance and durability for this particular application. They feature a 3.552-inch bore and a -27.7cc dish volume, contributing to the 8.5:1 compression ratio. Please note that these pistons are not CARB approved and cannot be shipped to California.