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 necessary for high-demand performance applications.

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

The FSR design minimizes friction and power loss by using a reduced skirt width. It also saves weight with a shorter wrist pin, contributing to overall engine efficiency.

Are these pistons compatible with all 400 SBC engines?

This set is designed for 400 SBC engines with a 4.145 inch bore. While they are engineered for performance, it's always recommended to confirm specific compatibility with your engine build and desired compression ratio.

JE Pistons 400 SBC .175 Dome Piston Set 182026

Name: JE Pistons 400 SBC .175 DOME Set of 8 Pistons
Brand: JE Pistons
SKU: je-pistons-je-pistons-400-sbc-175-dome-set-of-8-pistons-t14-295296
Price: 1052.79 USD
Availability: BackOrder

JE Pistons 400 SBC .175 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 .175 Dome Set of 8 Pistons. Forged in the USA for high-demand performance applications.

Key Features

Fits 400 SBC engines with a 4.145 inch bore.
Set includes 8 forged pistons with a .175 dome.
Forged in the USA from 2618 aluminum for high tensile strength.
Proprietary Forged Side Relief (FSR) design reduces friction and saves weight.
May include an accumulator groove to improve ring seal and reduce flutter.
Skirt coating (application dependent) reduces friction, wear, and noise.

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

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Product Details

JE Pistons is known for its forged racing pistons, bringing over 75 years of experience to high-performance engine components. This set of eight pistons is specifically made for the 400 SBC engine, featuring a .175 dome to help achieve your desired compression ratio. They are engineered, forged, and machined entirely in the USA, using 2618 aluminum, which provides the high tensile strength necessary for demanding performance builds.

These pistons incorporate JE Pistons' proprietary Forged Side Relief (FSR) design. This means they have reduced skirt width to minimize friction and power loss, while also saving weight with a shorter wrist pin. Depending on the specific application, an accumulator groove may be included to help manage combustion gas pressure, which can reduce ring flutter and improve ring seal for more consistent power delivery. Some applications also feature a skirt coating designed to reduce friction and wear on the piston skirts and cylinder walls, contributing to quieter operation.

This piston set is designed for a 4.145-inch bore and includes a 0.927-inch pin. They are built for high-demand performance applications where durability and optimized performance are critical. Please note that these pistons are not CARB approved and cannot be shipped to California.