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

These pistons are forged from 2618 aluminum. This material provides the high tensile strength needed to withstand the extreme pressures and temperatures found in high-performance racing engines.

What is the purpose of the Forged Side Relief (FSR) design?

The FSR design helps minimize friction and power loss by reducing the piston's skirt width. It also uses a shorter wrist pin, which further saves weight and contributes to overall engine efficiency.

Are these pistons compatible with all 400 SBC engines?

This set is designed for 400 SBC engines with a 4.130 inch bore. It's always recommended to verify compatibility with your specific engine build and consult the manufacturer's detailed specifications.

JE Pistons 400 SBC DOME -12 Set of 8 Pistons 170760

Name: JE Pistons 400 SBC DOME -12 Set of 8 Pistons
Brand: JE Pistons
SKU: je-pistons-je-pistons-400-sbc-dome-12-set-of-8-pistons-t14-295194
Price: 1129.82 USD
Availability: BackOrder

JE Pistons 400 SBC DOME -12 Set of 8 Pistons

$1129.82

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 400 SBC DOME -12 Set of 8 Pistons. Forged in the USA from 2618 aluminum for high-demand performance.

Key Features

Fits 400 SBC engines with a 4.130 inch bore.
Set includes 8 forged pistons.
Made in the USA from 2618 aluminum for high tensile strength.
Features proprietary Forged Side Relief (FSR) design to minimize friction and power loss.
Includes a 0.927 inch pin.
Piston dome volume is -12cc, suitable for specific compression ratio targets.

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Product Details

JE Pistons is known for making well-built forged racing pistons, drawing on over 75 years of experience to create top-tier components for domestic engines. This set of eight 400 SBC DOME -12 pistons is a prime example of their commitment to durability and performance, engineered and manufactured entirely in the USA.

Crafted from 2618 aluminum, these pistons offer the high tensile strength necessary for demanding performance applications. They feature JE's proprietary Forged Side Relief (FSR) forging design, which helps minimize friction and power loss by reducing skirt width and using a shorter wrist pin for added weight savings. Depending on the specific application, these pistons may also include an accumulator groove to reduce combustion gas pressure, preventing ring flutter and improving ring seal for consistent power delivery. A skirt coating, also application-dependent, further reduces friction and wear on the piston skirts and cylinder walls, contributing to quieter operation.

This kit is designed specifically for the 400 SBC engine with a 4.130-inch bore and includes a 0.927-inch pin. Each piston has a dome volume of -12cc, which is crucial for achieving the correct compression ratio in your build. Please note that these pistons are not CARB approved and cannot be shipped to California.