What material are these JE Pistons made from?

These JE 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 purpose of the Forged Side Relief (FSR) design?

The FSR design minimizes friction and power loss by reducing the skirt width. It also saves weight by using a shorter wrist pin, contributing to overall engine efficiency.

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 .630 Dome Piston Set 258231

Name: JE Pistons BBC .630 DOME Set of 8 Pistons
Brand: JE Pistons
SKU: je-pistons-je-pistons-bbc-630-dome-set-of-8-pistons-t14-295703
Price: 1052.79 USD
Availability: BackOrder

JE Pistons BBC .630 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 .630 Dome Set of 8 Pistons. Forged in the USA from 2618 aluminum for high-demand performance.

Key Features

Set includes 8 pistons for BBC engines with a 4.350-inch bore.
Forged in the USA from 2618 aluminum for high tensile strength.
Features a .630 dome and a 46.0 cc combustion chamber volume.
Includes a 0.990-inch wrist pin and a 1.245-inch compression distance.
Proprietary Forged Side Relief (FSR) design minimizes friction and power loss.
May include an accumulator groove to improve ring seal and reduce fluttering.

This piston set is designed for BBC (Big Block Chevrolet) engines with a 4.350-inch bore. Not CARB approved; cannot ship to California.

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Product Details

Forged from 2618 aluminum, these JE Pistons are built for serious performance applications. They feature a .630 dome and are designed for BBC (Big Block Chevrolet) engines, with a 4.350-inch bore size. This set includes eight pistons, ready to be installed in your high-demand build.

JE Pistons brings over 75 years of experience to their forged racing pistons, and this set is no exception. They're forged and machined entirely in the USA, ensuring a well-built component for your engine. The proprietary Forged Side Relief (FSR) 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, leading to better ring seal and consistent power. A skirt coating, if included for your application, further reduces friction and wear on the piston skirts and cylinder walls, contributing to quieter operation.

This piston set is designed specifically for each engine and use application, aiming for optimized performance and durability. Please note that these pistons are not CARB approved and cannot be shipped to California. They are designed for high-tensile strength, making them suitable for demanding performance builds where reliability is key.