What material are these pistons made from?

These pistons are forged from 2618 aluminum. This material is chosen for its high tensile strength, which is essential for high-demand performance applications.

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

The FSR design features reduced skirt width. This helps to minimize friction and power loss, while also saving weight on the piston assembly.

Are these pistons legal for use in California?

No, these pistons are not CARB approved and cannot be shipped to California due to emissions regulations.

JE Pistons 400 SBC Dome Piston Set 182040

Name: JE Pistons 400 SBC .305 DOME Set of 8 Pistons
Brand: JE Pistons
SKU: je-pistons-je-pistons-400-sbc-305-dome-set-of-8-pistons-t14-295310
Price: 1052.79 USD
Availability: BackOrder

JE Pistons 400 SBC .305 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 400 SBC .305 Dome Piston Set. Forged in the USA for high-demand performance.

Key Features

Fits 400 SBC engines with a 4.145 inch bore.
Set includes 8 pistons with a .305 inch dome and 10.8 cc volume.
Forged in the USA from 2618 aluminum for high tensile strength.
Proprietary Forged Side Relief (FSR) design minimizes friction and power loss.
May include an accumulator groove to improve ring seal and reduce fluttering.
May include a skirt coating to reduce friction, wear, and noise.

This piston set is designed for 400 SBC engines. Check manufacturer specifications to confirm compatibility with your specific engine build.

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Product Details

JE Pistons has been a leader in forged racing pistons for over 75 years, and they bring that experience to their domestic engine components. This set of eight pistons is specifically made for a 400 SBC engine with a .305 dome, designed to give you the durability and performance needed for high-demand applications. They are forged and machined entirely in the USA using 2618 aluminum, which provides the high tensile strength necessary for serious engine builds.

These pistons feature JE Pistons' proprietary Forged Side Relief (FSR) design. This means they have a reduced 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 help manage combustion gas pressure, leading to better ring seal and more consistent power. A skirt coating, also application-dependent, further reduces friction and wear on the piston skirts and cylinder walls, contributing to a quieter engine operation.

This set is designed for a 4.145-inch bore and includes pistons with a .305-inch dome, a 10.8 cc volume, and a 1.062-inch compression distance. The wrist pin diameter is 0.927 inches. Please note that these pistons are not CARB approved and cannot be shipped to California.