What material are these JE 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 like racing engines.

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

The FSR design helps to minimize friction and power loss. It achieves this through a reduced skirt width and a shorter wrist pin, which also contributes to saving weight on the piston assembly.

Are these pistons compatible with all Big Block Chevrolet engines?

These pistons are designed for Big Block Chevrolet (BBC) engines with a specific 4.320-inch bore. It's important to verify that this bore size and other specifications match your engine build requirements. They are not CARB approved and cannot be shipped to California.

JE Pistons BBC .565 Dome Piston Set 258267

Name: JE Pistons BBC .565 DOME Set of 8 Pistons
Brand: JE Pistons
SKU: je-pistons-je-pistons-bbc-565-dome-set-of-8-pistons-t14-295739
Price: 1052.79 USD
Availability: BackOrder

JE Pistons BBC .565 DOME Set of 8 Pistons

$1052.79

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 BBC .565 DOME Set of 8 Pistons. Forged in the USA from 2618 aluminum for high-demand performance.

Key Features

Fits Big Block Chevrolet (BBC) engines.
Set includes eight forged pistons.
Forged in the USA using 2618 aluminum for high tensile strength.
Features proprietary Forged Side Relief (FSR) design to minimize friction and power loss.
Designed specifically for each engine and use application for optimized performance and durability.
May include an accumulator groove to reduce ring flutter and improve ring seal.

These pistons are designed for Big Block Chevrolet (BBC) engines with a 4.320-inch bore. Not CARB approved and cannot ship to California.

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Product Details

If you're building a high-performance Big Block Chevrolet (BBC) engine, a solid set of pistons is crucial. This set of eight pistons from JE Pistons is forged from 2618 aluminum, a material chosen for its high tensile strength, making it well-suited for the demands of racing and performance applications. These pistons are designed specifically for BBC engines, aiming to optimize both durability and performance.

JE Pistons has been in the forged piston game for over 75 years, and they build these right here in the USA. They feature a proprietary Forged Side Relief (FSR) design, which helps reduce friction and power loss by using a narrower skirt and a shorter wrist pin, also saving weight. Depending on the specific application, these pistons might also include an accumulator groove to help manage combustion gas pressure, reducing ring flutter and improving ring seal for more consistent power delivery. Some applications also benefit from a skirt coating that can reduce friction and noise while minimizing wear on the piston skirts and cylinder walls.

This particular set is designed for a 4.320-inch bore with a 1.520-inch compression distance and a 0.990-inch wrist pin. It's important to note that these pistons are not CARB approved and cannot be shipped to California. For serious engine builds, especially those intended for the track, JE Pistons are a well-known choice for their proven performance and robust construction.