What material are these JE Pistons made from?

These pistons are forged in the USA 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 helps minimize friction and power loss. It achieves this through a reduced skirt width and a shorter wrist pin, which also contributes to saving weight.

Are these pistons compatible with all LS engines?

These pistons are specifically designed for LS engines and feature a 4.065-inch bore. It's always best to verify compatibility with your specific engine model and build specifications.

JE Pistons Forged Piston Set 312124 - LS Engines

Name: JE Pistons LS ASYM DM 4100STRKR Set of 8 Pistons
Brand: JE Pistons
SKU: je-pistons-je-pistons-ls-asym-dm-4100strkr-set-of-8-pistons-t14-296297
Price: 975.74 USD
Availability: BackOrder

JE Pistons LS ASYM DM 4100STRKR Set of 8 Pistons

$975.74

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 LS ASYM DM 4100STRKR Set of 8 Pistons. Forged in the USA from 2618 aluminum for high-demand LS engine builds.

Key Features

Fits LS engines.
Set includes 8 forged pistons.
Manufactured in the USA from 2618 aluminum for high tensile strength.
Features JE Pistons' proprietary Forged Side Relief (FSR) design to minimize friction and power loss.
Includes an accumulator groove (application dependent) to improve ring seal.
Skirt coating (application dependent) reduces friction, wear, and operating noise.

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Product Details

JE Pistons is well-known for making strong forged racing pistons, with over 75 years of experience. They've put that knowledge into this set of LS ASYM DM 4100STRKR pistons, built for demanding performance applications. These pistons are engineered specifically for LS engines, aiming for the best balance of durability and performance, whether you're on the track or just pushing your engine hard.

Forged in the USA from 2618 aluminum, these pistons have the high tensile strength needed for serious builds. They feature JE's proprietary Forged Side Relief (FSR) design, which helps minimize friction and power loss by using a reduced skirt width and a shorter wrist pin, saving weight too. Depending on the specific application, you might also find an accumulator groove to help reduce combustion gas pressure, improving ring seal and keeping power consistent. Some applications also include a skirt coating to further reduce friction and wear on the piston skirts and cylinder walls, which can also help quiet down the engine and reduce operating noise.

This set includes eight pistons, each with a 4.065-inch bore, a 1.065-inch compression distance, and a 0.927-inch pin. They are designed for optimal performance and durability in your LS engine. Please note that these pistons are not CARB approved and cannot be shipped to California.