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 necessary to withstand the extreme pressures and temperatures found in high-performance and racing engines.

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

The FSR design helps reduce friction and power loss by using a narrower piston skirt width. It also contributes to weight savings by utilizing a shorter wrist pin, which can improve engine responsiveness.

Are these pistons compatible with all LS engine builds?

This set is specifically designed for LS engines with a 4.125 inch bore. While they are made for high-demand applications, it's always recommended to verify compatibility with your specific engine configuration and build goals.

JE Pistons LS Piston Set 312047 - Forged Aluminum

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-t14-296253
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 Piston Set. Forged 2618 aluminum for high-demand LS engines.

Key Features

Fits 8-cylinder LS engines with a 4.125 inch bore.
Forged from 2618 aluminum for high tensile strength in performance applications.
Proprietary Forged Side Relief (FSR) design minimizes friction and power loss.
May include an accumulator groove to improve ring seal and reduce flutter.
Piston skirts may feature a coating to reduce friction and wear.
Made 100% in the USA.

This piston set is designed for 8-cylinder LS engines with a 4.125 inch bore. Check manufacturer specifications for compatibility with your specific engine build.

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Product Details

If you're building a high-performance LS engine, getting the right pistons is crucial for durability and power. This set from JE Pistons is designed specifically for LS applications, offering a robust solution for demanding builds. They're forged in the USA from 2618 aluminum, a material known for its high tensile strength, making these pistons well-suited for engines that see a lot of stress.

JE Pistons has incorporated several design features to help your engine run efficiently and last longer. The proprietary Forged Side Relief (FSR) forging design helps reduce friction and power loss by using a narrower skirt width, and it also saves weight with a shorter wrist pin. Depending on the specific application, these pistons may also feature an accumulator groove to help manage combustion gas pressure, which can improve ring seal and prevent fluttering for more consistent power delivery. A skirt coating, also application-dependent, is used to reduce friction and wear on the piston skirts and cylinder walls, which can also help quiet down engine noise.

This set includes eight pistons, each with a 4.125-inch bore. They are made 100% in the USA, reflecting JE Pistons' commitment to quality manufacturing. Keep in mind that these pistons are not CARB approved and cannot be shipped to California. For a serious LS engine build, these forged pistons are a solid option to consider.