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

The FSR design helps minimize friction and power loss by reducing the piston skirt width. It also saves additional weight by utilizing a shorter wrist pin, contributing to overall engine efficiency.

Are these pistons compatible with all LS engines?

This specific set is for LS 8-cylinder engines with a 4.005-inch bore. While designed for LS applications, it's crucial to verify the exact bore size and engine configuration against the manufacturer's specifications for your vehicle.

What does the skirt coating do?

The skirt coating, included depending on the application, helps to reduce friction and wear on the piston skirts and cylinder walls. This can lead to a quieter engine operation and improved longevity.

JE Pistons Forged Piston Set 312053 - LS 8cyl

Name: JE Pistons LS ASYM DISH/INV DM Set of 8 Pistons
Brand: JE Pistons
SKU: je-pistons-je-pistons-ls-asym-dish-inv-dm-set-of-8-pistons-t14-296258
Price: 975.74 USD
Availability: BackOrder

JE Pistons LS ASYM DISH/INV DM 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 DISH/INV DM Set of 8 Pistons. Forged in the USA for high-demand performance applications.

Key Features

Fits LS 8-cylinder engines with a 4.005-inch bore.
Made in the USA from 2618 aluminum for high tensile strength in performance applications.
Proprietary Forged Side Relief (FSR) design minimizes friction and saves weight.
Includes an accumulator groove (application dependent) to reduce combustion gas pressure and improve ring seal.
Features a skirt coating (application dependent) to reduce friction, wear, and noise.
Designed specifically for each engine and use application for optimized performance and durability.

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Product Details

When you're building a high-performance LS engine, the pistons are a critical component that needs to handle serious stress. This set of eight forged pistons from JE Pistons is designed to meet those demands. They're made from 2618 aluminum, a material known for its high tensile strength, which is exactly what you need for engines pushed to their limits, whether that's on the drag strip or in a custom build.

JE Pistons has been in the game for over 75 years, and they build these pistons right here in the USA. They use a proprietary Forged Side Relief (FSR) design that helps cut down on friction and weight by reducing skirt width and using a shorter wrist pin. Depending on your specific LS application, these pistons might also feature an accumulator groove to help control combustion gas pressure, leading to better ring seal and consistent power. Some applications also include a skirt coating that further reduces friction and wear, making your engine run quieter and smoother.

This kit is for an 8-cylinder engine with a 4.005-inch bore. It's important to note that these pistons are not CARB approved and cannot be shipped to California. If you're serious about building a robust LS engine, this set of pistons is a solid choice for durability and performance.