What is the compression ratio of these pistons?

These JE Pistons are designed for a 9.5:1 compression ratio. This is achieved through the piston's dome/dish volume and the specific cylinder head and gasket combination used in your engine build.

What materials are these pistons made from?

These pistons are forged from 2618 aluminum. This material is chosen for its high tensile strength, which is necessary to withstand the demanding conditions of high-performance engines.

Are any special coatings or grooves included on these pistons?

Depending on the specific application, these pistons may feature a skirt coating to reduce friction and wear, and an accumulator groove to help improve ring seal by reducing combustion gas pressure.

JE Pistons 5.4 4V Modular Piston Set 314694

Name: JE Pistons 5.4 4V MODULAR 9.5:1 Set of 8 Pistons
Brand: JE Pistons
SKU: je-pistons-je-pistons-5-4-4v-modular-9-5-1-set-of-8-pistons-t14-296575
Price: 950.07 USD
Availability: BackOrder

JE Pistons 5.4 4V MODULAR 9.5:1 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 9.5:1 Set of 8 Pistons. Forged from 2618 aluminum for high-tensile strength in performance applications.

Key Features

Fits 5.4L 4V Modular engines.
Set includes 8 pistons with a 9.5:1 compression ratio.
Features a 3.572-inch bore and a 1.320-inch compression distance.
Constructed from 2618 aluminum for high tensile strength in performance applications.
Utilizes JE Pistons' proprietary Forged Side Relief (FSR) design to minimize friction and power loss.
Includes a 0.866-inch wrist pin.

This piston set is designed for the 5.4L 4V Modular engine. Please verify compatibility with your specific vehicle and engine configuration.

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Product Details

Forged from 2618 aluminum, these JE Pistons are built for high-demand performance applications where high tensile strength is critical. This set is specifically designed for the 5.4L 4V Modular engine, featuring a 9.5:1 compression ratio and a 3.572-inch bore. JE Pistons brings over 75 years of experience to their forged piston designs, ensuring durability and performance proven on the track.

Each piston in this set utilizes JE Pistons' proprietary Forged Side Relief (FSR) forging design. This advanced design minimizes friction and power loss by using a reduced skirt width, and further saves weight with a shorter wrist pin. Depending on the specific application, these pistons may also feature an accumulator groove to help reduce combustion gas pressure, which can prevent ring flutter and improve ring seal for more consistent power delivery. A skirt coating, also application-dependent, is used to reduce friction and wear on the piston skirts and cylinder walls, contributing to quieter operation.

These pistons are engineered, forged, and machined 100% in the USA, ensuring a high standard of manufacturing. The included kit contains a set of 8 pistons, each with a 1.320-inch compression distance and a 0.866-inch pin diameter. Please note that this part is not CARB approved and cannot be shipped to California.