What material are these pistons made from and why is it important?

These pistons are forged from 2618 aluminum. This material is chosen for its high tensile strength, which is crucial for handling the extreme pressures and temperatures found in high-performance and racing engines.

What is the Forged Side Relief (FSR) design and what benefit does it offer?

The FSR design is a proprietary forging from JE Pistons. It uses a reduced skirt width and a shorter wrist pin, which helps to minimize friction and power loss while also saving weight on the piston assembly.

Are any special coatings or grooves included with these pistons?

Depending on the specific application, these pistons may include an accumulator groove to help reduce combustion gas pressure and improve ring seal. Some applications also feature a skirt coating to reduce friction and wear, which can also help lower operating noise.

JE Pistons BBC .475 Dome Piston Set 258218

Name: JE Pistons BBC .475 DOME Set of 8 Pistons
Brand: JE Pistons
SKU: je-pistons-je-pistons-bbc-475-dome-set-of-8-pistons-t14-295696
Price: 1052.79 USD
Availability: BackOrder

JE Pistons BBC .475 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 .475 DOME Set of 8 Pistons. Forged in the USA for high-demand performance.

Key Features

Fits BBC (Big Block Chevrolet) engines.
Set includes 8 forged pistons.
Forged in the USA using 2618 aluminum for high tensile strength.
Features a proprietary Forged Side Relief (FSR) design to minimize friction and save weight.
Includes a 4.530 inch bore size and a .475 inch dome volume.
Utilizes a 0.990 inch wrist pin and has a 1.120 inch compression distance.

This piston set is designed for BBC (Big Block Chevrolet) engines with a 4.530 inch bore. Please verify compatibility with your specific engine build.

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Product Details

JE Pistons is known for making well-built forged racing pistons, drawing on over 75 years of experience. They've applied that knowledge to this set of BBC pistons, designed for serious performance applications. These aren't just off-the-shelf parts; they're crafted specifically for your engine to give you the best blend of durability and power.

These pistons are forged in the USA from 2618 aluminum, which gives them the strong tensile strength needed for high-demand builds. They feature a proprietary Forged Side Relief (FSR) design that helps cut down on friction and power loss by using a narrower skirt and a shorter wrist pin, which also saves weight. Depending on your specific application, you might also get an accumulator groove to help manage combustion gas pressure, leading to better ring seal and consistent power. Some applications also include a skirt coating that reduces friction and wear on the piston skirts and cylinder walls, while also quieting things down. Everything is made 100% in the USA.

This set is for an 8-cylinder engine with a 4.530-inch bore and includes a .475 dome volume. The pin size is 0.990 inches, and the compression distance is 1.120 inches. Please note that these pistons are not CARB approved and cannot be shipped to California.