Engines and Components› Pistons and Piston Rings

JE Pistons

LS ASYM FT 3.900STRK

$226.10

SKU: J001 323987L

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Description

The JE Pistons 323987L is a set of flat-top pistons designed for GM LS engines with a 4.130-inch bore. These pistons feature an Asymmetrical FSR (Forged Side Relief) forging design, which provides a larger skirt on the major thrust side for increased strength while reducing friction with a smaller skirt on the minor thrust side. Constructed from 2618 forged aluminum, these pistons are lightweight and durable.

Fitment

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Specifications

BrandJE Pistons
Part NumberJ001 323987L

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Built for enthusiasts. Every order is backed by our 30 day return window on eligible items. Unused and uninstalled products may be returned with approved RMA and no restocking fees when received in new condition. Orders placed through the MOTORMIA app with a complete build qualify for our Fitment Guarantee — free return shipping if the part doesn’t fit your exact setup. The guarantee covers fit only; installation must follow manufacturer instructions, and we recommend a qualified shop for parts marked Difficulty 4–5.

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