What is the compression distance and pin size for these pistons?

These pistons have a compression distance of 1.304 inches and use a 0.927 inch wrist pin. This specific sizing is crucial for achieving the correct compression ratio with your cylinder heads.

Are these pistons suitable for all LS engine builds?

These pistons are specifically designed for LS engines with a 4.065 inch bore. While they are built for high-demand performance applications, it's always best to verify compatibility with your specific engine configuration and intended use.

What does the 'ASYM DOME' designation mean?

The 'ASYM DOME' refers to an asymmetrical piston dome design. This advanced shape is engineered to optimize combustion chamber efficiency and reduce detonation in specific LS engine applications.

JE Pistons LS ASYM DOME Piston Set 312096

Name: JE Pistons LS ASYM DOME Set of 8 Pistons
Brand: JE Pistons
SKU: je-pistons-je-pistons-ls-asym-dome-set-of-8-pistons-t14-296277
Price: 975.74 USD
Availability: BackOrder

JE Pistons LS ASYM DOME 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 DOME Set of 8 Pistons. Forged from 2618 aluminum for high-demand performance.

Key Features

Fits LS engines with a 4.065 inch bore.
Set includes 8 forged pistons.
Constructed from 2618 aluminum for high tensile strength and durability.
Features proprietary Forged Side Relief (FSR) design to minimize friction and power loss.
Includes accumulator groove (application dependent) to reduce combustion gas pressure and improve ring seal.
Skirt coating (application dependent) reduces friction and wear while lowering operating noise.

These pistons are designed for LS engines with a 4.065 inch bore. Please consult manufacturer specifications for complete compatibility details.

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Product Details

Forged from 2618 aluminum, these JE Pistons are built for serious performance in LS engines. This material choice is key because it offers the high tensile strength needed when you're pushing your engine hard, whether that's on the track or just for spirited driving. JE Pistons has been making forged racing pistons for over 75 years, and they engineer and machine these right here in the USA, specifically for each engine and application to give you the best mix of durability and power.

You'll find a few notable design choices here that make a difference. The proprietary Forged Side Relief (FSR) forging design helps cut down on friction and power loss by using a reduced skirt width, and it also saves a bit of weight with a shorter wrist pin. Depending on your specific LS application, you might also get an accumulator groove, which helps manage combustion gas pressure to keep your rings sealed tight and your power consistent. Some applications also include a skirt coating that further reduces friction and wear on the piston skirts and cylinder walls, which can even help quiet things down a bit.

This is a complete set of 8 pistons, ready to be installed in your LS engine. They're designed for a 4.065 inch bore, with a 1.304 inch compression distance and a 0.927 inch pin. Keep in mind these are not CARB approved and cannot be shipped to California. For the best results, always refer to the manufacturer's installation instructions for proper fitment and assembly.