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

These pistons are forged from 2618 aluminum. This material is chosen for its high tensile strength, which is crucial for handling the extreme pressures and temperatures found in high-performance racing engines.

What is the Forged Side Relief (FSR) design?

The FSR design is a proprietary forging from JE Pistons. It helps reduce friction and power loss by using a narrower skirt width and a shorter wrist pin, contributing to both performance and weight savings.

Are these pistons compatible with all 400 SBC engines?

This set is designed for 400 SBC engines with a 4.125 inch bore. While JE Pistons designs for specific applications, it's always best to verify compatibility with your exact engine build and specifications before purchase.

JE Pistons 400 SBC DOME -12 Set of 8 Pistons 170765

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-t14-295199
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 4.125 inch bore.
Set includes 8 forged pistons.
Constructed from 2618 aluminum for high tensile strength in performance applications.
Features JE Pistons' proprietary Forged Side Relief (FSR) design to minimize friction and power loss.
Includes a 0.927 inch wrist pin.
Designed specifically for each engine and use application for optimized performance and durability.

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Product Details

JE Pistons is known for being a leader in forged racing pistons, bringing over 75 years of experience to their wide range of forged pistons for domestic engines. This set of eight 400 SBC DOME -12 pistons is engineered, forged, and machined 100% in the USA, using 2618 aluminum. This material choice yields the high tensile strength needed for high-demand performance applications, making them a solid choice for serious engine builds.

These pistons feature JE Pistons' proprietary Forged Side Relief (FSR) forging design, which helps minimize friction and power loss by using a reduced skirt width. This design also saves weight with a shorter wrist pin. Depending on the specific application, an accumulator groove can help reduce pressure from combustion gases, improving ring seal for consistent power. Some applications also include a skirt coating that reduces friction and wear on the piston skirts and cylinder walls, while also lowering operating noise. Each piston is designed specifically for the 400 SBC engine and its intended use, aiming for optimized performance and durability.

This kit includes pistons for an 8-cylinder engine with a 4.125 inch bore, a 1.125 inch compression distance, and a 0.927 inch pin. Please note that this part is not CARB approved and cannot be shipped to California. It is also subject to California's Prop 65 warning.