Engines and Components› Pistons and Piston Rings
JE Pistons
LS ASYM FT 4.100STRK
SKU: J001 311990R
Advanced — 4+ hours
Description
This piston is engineered with a proprietary Forged Side Relief (FSR) forging design to minimize friction and power loss, utilizing a reduced skirt width. The piston has a 4.000-inch bore and a 4.100-inch stroke.
Fitment
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Available on iOS & Android
Specifications
| Brand | JE Pistons |
| Part Number | J001 311990R |
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Buy with Confidence
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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