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.

What does the 'ASYM FT' in the product name mean?

ASYM refers to the asymmetrical design, likely related to the Forged Side Relief (FSR) feature that helps minimize friction. FT stands for Flat Top, indicating the piston crown design.

Are these pistons compatible with all LS engines?

This specific set is designed for LS engines with a 4.030 inch bore. It's important to verify your engine's bore size and specific LS application requirements before purchasing.

JE Pistons Forged Piston Set 311964

Name: JE Pistons LS ASYM FT Set of 8 Pistons
Brand: JE Pistons
SKU: je-pistons-je-pistons-ls-asym-ft-set-of-8-pistons-t14-296204
Price: 975.74 USD
Availability: BackOrder

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

Key Features

Fits LS engines with a 4.030 inch bore.
Set includes eight forged pistons.
Constructed from 2618 aluminum for high tensile strength.
Features a proprietary Forged Side Relief (FSR) design to minimize friction and save weight.
May include an accumulator groove for improved ring seal and consistent power.
Skirt coating (depending on application) reduces friction and wear while lowering noise.

This piston set is designed for LS engines with a 4.030 inch bore. Not CARB approved and cannot ship to California.

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Product Details

If you're building a high-performance LS engine, you need pistons that can handle the stress. This set of eight ASYM FT pistons from JE Pistons is forged in the USA from 2618 aluminum, a material known for its high tensile strength, making it ideal for demanding applications. JE Pistons has over 75 years of experience in creating forged racing pistons, and this set is designed specifically for LS engines to offer a great balance of durability and performance.

These pistons feature a proprietary Forged Side Relief (FSR) design, which helps reduce friction and power loss by using a narrower skirt and a shorter wrist pin, saving weight in the process. Depending on the specific application, they may also include an accumulator groove to help manage combustion gas pressure, leading to better ring seal and more consistent power. A skirt coating, also application-dependent, further reduces friction and wear on the piston skirts and cylinder walls, while also contributing to quieter operation. Every piston is machined 100% in the USA, ensuring you're getting a well-built component ready for the track or the street.

This set is designed for a 4.030 inch bore and includes 0.927 inch pins. Please note that these pistons are not CARB approved and cannot be shipped to California. They are also subject to Prop 65 warnings.