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

The FSR design helps minimize friction and power loss by using a reduced skirt width. It also contributes to weight savings by utilizing a shorter wrist pin.

Are these pistons suitable for street use?

These pistons are engineered for high-demand performance and racing applications. While they can be used in street builds, they are not CARB approved and cannot be shipped to California due to emissions regulations.

What materials are used in these pistons?

These pistons are forged from 2618 aluminum, which provides the high tensile strength needed for demanding performance applications.

JE Pistons 400 SBC DOME -12 Piston Set 170755

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-t14-295189
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.
Constructed from 2618 aluminum for high tensile strength in performance applications.
Features a dome piston design.
Includes 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 to handle the demands of high-performance 400 SBC engines. The 2618 alloy offers high tensile strength, making it a solid choice for applications where durability and power are critical. This set includes eight pistons, each featuring a dome design and a 4.130-inch bore, ready to be installed with a 0.927-inch pin.

JE Pistons incorporates several design features to optimize performance and longevity. The proprietary Forged Side Relief (FSR) forging design helps reduce friction and power loss by using a reduced skirt width, and it also saves weight with a shorter wrist pin. Depending on the specific application, these pistons may also include an accumulator groove to manage combustion gas pressure, which helps prevent ring flutter and improves ring seal for consistent power delivery. Some applications also feature a skirt coating that further reduces friction and wear on the piston skirts and cylinder walls, contributing to quieter operation.

JE Pistons has over 75 years of experience in creating forged racing pistons, and this set reflects that expertise. Each piston is engineered and machined 100% in the USA, specifically for the 400 SBC engine and its intended use, aiming for an optimal balance of performance and durability. While these pistons are designed for racing and high-demand applications, it's important to note they are not CARB approved and cannot be shipped to California.