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

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

Are these pistons suitable for daily driving or only racing applications?

These pistons are forged from 2618 aluminum and incorporate features like FSR and optional skirt coatings, indicating they are built for high-demand performance and racing applications where durability and power are critical.

What does the -12cc dome volume mean for my engine?

A negative dome volume, like the -12cc here, is typically used in high-compression builds to achieve a specific target compression ratio when paired with the correct cylinder heads and crankshaft. It helps control the combustion chamber volume.

JE Pistons 400 SBC DOME -12 Piston Set 170757

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-t14-295191
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 4.145 inch bore.
Set includes 8 forged pistons.
Pistons are forged in the USA from 2618 aluminum for high tensile strength.
Features a dome piston design with a -12cc volume.
Includes a 1.062 inch compression distance and a 0.927 inch wrist pin.
Proprietary Forged Side Relief (FSR) design minimizes friction and power loss.

This piston set is designed for 400 SBC engines. Please verify compatibility with your specific engine build.

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Product Details

Forged in the USA from 2618 aluminum, these JE Pistons are built for high-demand performance applications. This set is specifically designed for the 400 SBC engine, featuring a dome shape with a -12cc volume, a 4.145-inch bore, and a 1.062-inch compression distance. The use of 2618 aluminum provides the high tensile strength needed to withstand the rigors of performance engines.

JE Pistons brings over 75 years of experience to their forged pistons, and this set is no exception. They incorporate a proprietary Forged Side Relief (FSR) forging design, which minimizes friction and power loss by reducing skirt width and utilizing a shorter wrist pin for additional weight savings. 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 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 piston set is made 100% in the USA, ensuring a high level of manufacturing control and quality. They are designed specifically for each engine and use application to provide optimized performance and durability. Please note that this set is not CARB approved and cannot be shipped to California. If you're building a high-performance 400 SBC, these pistons are a solid option for achieving your goals.