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 engine applications.

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.

Are these pistons legal for use in California?

No, these pistons are not CARB approved and cannot be shipped to California due to emissions regulations.

JE Pistons BBC Inv Dome Piston Set 257955

Name: JE Pistons BBC INV DOME Set of 8 Pistons
Brand: JE Pistons
SKU: je-pistons-je-pistons-bbc-inv-dome-set-of-8-pistons-t14-295639
Price: 1052.79 USD
Availability: BackOrder

JE Pistons BBC INV 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 Inv Dome Set of 8 Pistons. Forged 2618 aluminum for high-demand performance.

Key Features

Fits 8-cylinder engines with a 4.600 inch bore.
Features an inverted dome design with a -20.0cc dish.
Forged from 2618 aluminum for high tensile strength in performance applications.
Proprietary Forged Side Relief (FSR) design minimizes friction and power loss.
May include an accumulator groove to reduce combustion gas pressure and improve ring seal.
May feature a skirt coating to reduce friction and wear, and quiet operation.

This is a universal piston set for 8-cylinder engines with a 4.600 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 (Big Block Chevrolet) inverted dome pistons, designed for high-demand performance applications. These pistons are forged and machined entirely in the USA using 2618 aluminum, which gives them the high tensile strength needed for serious engine builds.

This set features JE Pistons' proprietary Forged Side Relief (FSR) forging design. This design 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, these pistons may also include an accumulator groove to help reduce combustion gas pressure, preventing ring flutter and improving ring seal for more consistent power. A skirt coating, also application-dependent, further reduces friction and wear on the piston skirts and cylinder walls, contributing to quieter operation.

Each piston is designed specifically for its intended engine and use, aiming for an optimized balance of performance and durability. This kit includes 8 pistons, each with a 4.600-inch bore and a -20.0cc inverted dome dish. Please note that these pistons are not CARB approved and cannot be shipped to California.