What material are these JE Pistons made from?

These pistons are forged in the USA using 2618 aluminum. This alloy is chosen for its high tensile strength, which is necessary for high-demand performance engine applications.

What is the purpose of the accumulator groove?

The accumulator groove, depending on the application, helps reduce pressure from combustion gases. This can prevent ring fluttering and improve ring seal, leading to more consistent power output from the engine.

Are these pistons compatible with all engines?

This specific set is designed for the 502 BBC engine with a 4.600-inch bore. While JE Pistons makes many applications, these are tailored for that particular engine configuration. They are also not CARB approved and cannot be shipped to California.

JE Pistons 502BBC OPEN CHAM DOM Piston Set 243331

Name: JE Pistons 502BBC OPEN CHAM DOM Set of 8 Pistons
Brand: JE Pistons
SKU: je-pistons-je-pistons-502bbc-open-cham-dom-set-of-8-pistons-t14-295582
Price: 1232.52 USD
Availability: BackOrder

JE Pistons 502BBC OPEN CHAM DOM Set of 8 Pistons

$1232.52

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 502BBC OPEN CHAM DOM Set of 8 Pistons. Forged in the USA from 2618 aluminum for high-demand performance.

Key Features

Set includes 8 pistons for a V8 engine.
Forged in the USA using 2618 aluminum for high tensile strength.
Features an open chamber dome design.
Designed for a 4.600-inch bore size.
Includes a 1.120-inch compression distance and a 0.990-inch wrist pin.
Proprietary Forged Side Relief (FSR) design minimizes friction and power loss.

⚠️ CA WARNING: This product can expose you to chemicals known to the State of California to cause cancer and/or birth defects or other reproductive harm. Learn more

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Product Details

Forged in the USA using 2618 aluminum, these JE Pistons are built for high-demand performance applications. This set is specifically designed for the 502 BBC engine, featuring an open chamber dome design and a 4.600-inch bore. The 2618 aluminum alloy provides the high tensile strength needed to withstand the rigors of performance engines, ensuring durability where it matters most.

JE Pistons incorporates their proprietary Forged Side Relief (FSR) forging design, which helps minimize friction and power loss by reducing skirt width. This design also saves weight with a shorter wrist pin. Depending on the specific application, these pistons may also feature an accumulator groove to reduce combustion gas pressure, preventing ring flutter and improving ring seal for consistent power delivery. 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 kit includes eight pistons, each designed for optimal performance and durability. They are made 100% in the USA, reflecting JE Pistons' commitment to quality manufacturing. Please note that this part is not CARB approved and cannot be shipped to California. Always refer to the manufacturer's installation instructions for proper fitment and assembly details.