What material are these JE 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 where engines are subjected to significant stress.

What specific design features help improve performance and durability?

They feature JE Pistons' proprietary Forged Side Relief (FSR) design, which reduces skirt width and length to minimize friction and save weight. Depending on the application, they may also include an accumulator groove for better ring seal and a skirt coating to reduce friction and noise.

Are these pistons compatible with all LS engines?

These pistons are designed for LS engines with a 4.010 inch bore. While they are built for performance, it's important to verify that the compression distance, pin diameter, and other specifications match your specific engine build and desired compression ratio.

JE Pistons LS ASYM DM 4000STRKR Piston Set 312107

Name: JE Pistons LS ASYM DM 4000STRKR Set of 8 Pistons
Brand: JE Pistons
SKU: je-pistons-je-pistons-ls-asym-dm-4000strkr-set-of-8-pistons-t14-296285
Price: 975.74 USD
Availability: BackOrder

JE Pistons LS ASYM DM 4000STRKR 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 4000STRKR Set of 8 Pistons. Forged in the USA from 2618 aluminum for high-demand performance applications.

Key Features

Set of 8 pistons designed for LS engines.
Forged in the USA from 2618 aluminum for high tensile strength.
4.010 inch bore size.
1.115 inch compression distance.
0.927 inch pin diameter.
Features proprietary Forged Side Relief (FSR) design to minimize friction and save weight.

This is a universal piston set designed for LS engines with a 4.010 inch bore. Always confirm compatibility with your specific engine build and specifications.

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Product Details

Starting with a 2618 aluminum forging, these JE Pistons LS ASYM DM 4000STRKR pistons are built for serious performance. Forged and machined entirely in the USA, they bring over 75 years of JE Pistons' racing experience to your LS engine. This set is designed for a 4.010 inch bore and includes a 1.115 inch compression distance, with a 0.927 inch pin diameter. The 2618 aluminum material offers high tensile strength, crucial for engines pushed to their limits, whether on the drag strip or a dirt track.

JE Pistons incorporates several design features to maximize durability and performance. The proprietary Forged Side Relief (FSR) forging design helps reduce friction and power loss by using a narrower, shorter skirt, which also saves weight. Depending on the specific application, these pistons may feature an accumulator groove to help manage combustion gas pressure, reducing ring flutter and improving the seal for consistent power delivery. Some applications also include a skirt coating that works to reduce friction and wear on the piston skirts and cylinder walls, while also contributing to quieter operation. These pistons are specifically designed for the LS engine and its intended use, aiming for an optimized balance of performance and longevity.

This set includes eight pistons, ready to be installed in your LS engine build. Please note that these pistons are not CARB approved and cannot be shipped to California. Always refer to the manufacturer's installation instructions for proper fitment and assembly details.