What material are these pistons made from?

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

What is the Forged Side Relief (FSR) design?

The FSR design is a proprietary JE Pistons feature that helps minimize friction and power loss. It achieves this through a reduced skirt width and a shorter wrist pin, which also contributes to saving weight.

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

These pistons are designed specifically for the 5.4 4V Modular engine and use a 3.562-inch bore. It's important to confirm that this bore size and the 11:1 compression ratio are suitable for your specific engine build and intended use.

JE Pistons 5.4 4V Modular 11:1 Piston Set 314698

Name: JE Pistons 5.4 4V MODULAR 11:1 Set of 8 Pistons
Brand: JE Pistons
SKU: je-pistons-je-pistons-5-4-4v-modular-11-1-set-of-8-pistons-t14-296579
Price: 950.07 USD
Availability: BackOrder

JE Pistons 5.4 4V MODULAR 11:1 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 11:1 Set of 8 Pistons. Forged in the USA for high-demand performance.

Key Features

Fits 5.4 4V Modular engines.
Set includes 8 forged pistons.
Features an 11:1 compression ratio.
Constructed from 2618 aluminum for high tensile strength.
Includes proprietary Forged Side Relief (FSR) design to minimize friction and power loss.
Piston bore is 3.562 inches.

This piston set is designed for 5.4 4V Modular engines. Please verify compatibility with your specific engine build.

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Product Details

JE Pistons is known for making strong, reliable forged pistons that have proven themselves on the race track for over 75 years. This set of eight pistons is built for the 5.4 4V Modular engine, featuring an 11:1 compression ratio. They are engineered specifically for high-demand performance applications, using 2618 aluminum which offers high tensile strength.

These pistons incorporate JE Pistons' proprietary Forged Side Relief (FSR) design. This helps minimize friction and power loss by using a reduced skirt width and a shorter wrist pin, which also saves weight. Depending on the specific application, they may also include an accumulator groove to help reduce combustion gas pressure, preventing ring flutter and improving ring seal for consistent power delivery. Some applications also feature a skirt coating that reduces friction and wear on the piston skirts and cylinder walls, while also lowering operating noise.

Every part of this piston set is made 100% in the USA, ensuring a well-built component ready for serious performance. The bore size is 3.562 inches, with a compression volume of -5.5 cc, and they use a 0.866-inch pin. Please note that these pistons are not CARB approved and cannot be shipped to California.