Exterior Components› Body Panels and Components

United Engine & Machine Co

CHEVROLET 489 ROD 6.385 CC SOLID DOME 17CC 1V KB HYPER PISTON SET

$79.89

SKU: U00B KB398.100

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Special Order
Ships in 4–6 weeks
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Non-Returnable Item
INSTALL DIFFICULTY
DIY PRO SHOP

Professional / shop required

Description

The United Engine & Machine Co KB398.100 is a piston set designed for high-performance applications. Constructed from Cast 390 Hypereutectic Alloy, these pistons feature a skirt coating for enhanced durability. They are engineered with a 4.350-inch bore and a 6.385-inch rod length, and a 4.25-inch stroke.

Fitment

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Specifications

BrandUnited Engine & Machine Co
Part NumberU00B KB398.100

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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