What material are these JE Pistons made from?

These pistons are forged from 2618 aluminum. This material is selected for its high tensile strength, making it well-suited 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 by reducing the piston skirt width. It also contributes to saving weight on the piston assembly.

Are these pistons compatible with all Big Block Chevrolet engines?

These pistons are designed for BBC engines and feature a 4.280-inch bore. It's important to verify the specific bore size and compression distance requirements for your particular engine build to ensure proper fitment.

JE Pistons BBC .625 Dome Piston Set 258228

Name: JE Pistons BBC .625 DOME Set of 8 Pistons
Brand: JE Pistons
SKU: je-pistons-je-pistons-bbc-625-dome-set-of-8-pistons-t14-295700
Price: 1052.79 USD
Availability: BackOrder

JE Pistons BBC .625 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 .625 DOME Set of 8 Pistons. Forged in the USA for high-demand performance.

Key Features

Set includes 8 pistons for BBC engines.
Forged in the USA using 2618 aluminum for high tensile strength.
Features a .625 dome with 46.0 cc volume.
Designed with a 4.280-inch bore and a 0.990-inch wrist pin.
Proprietary Forged Side Relief (FSR) design minimizes friction and saves weight.
May include an accumulator groove to improve ring seal and reduce flutter.

This is a universal piston set for BBC engines. Check manufacturer specifications to confirm compatibility with your specific engine build.

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Product Details

These JE Pistons BBC pistons are forged from 2618 aluminum, a material chosen for its high tensile strength, which is crucial for high-demand performance applications. Each piston features a .625 dome and is designed specifically for BBC (Big Block Chevrolet) engines, aiming for an optimized combination of performance and durability. They are manufactured 100% in the USA, reflecting a commitment to quality and domestic production.

JE Pistons incorporates several design elements to enhance performance and longevity. The proprietary Forged Side Relief (FSR) forging design reduces skirt width, which helps minimize friction and power loss, while also saving weight. Depending on the specific application, these pistons may also include an accumulator groove to manage combustion gas pressure, preventing ring flutter and improving ring seal for more consistent power delivery. Additionally, a skirt coating, if included for your application, further reduces friction and wear on the piston skirts and cylinder walls, contributing to quieter operation and extended engine life.

This set includes eight pistons, each with a 4.280-inch bore, a 1.245-inch compression distance (CD), and a 0.990-inch wrist pin. The dome volume is 46.0 cc. Please note that these pistons are not CARB approved and cannot be shipped to California. They are designed for performance use and are a solid choice for engine builds where durability and power are paramount.