Exterior Components› Body Panels and Components

United Engine & Machine Co

CHRYSLER 450 ROD 6.768 STEP HEAD 4.4CC 2V KB HYPER PISTON SET

$82.44

SKU: U00B KB280.STD

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In Stock
Ships by Jun 14
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Non-Returnable Item
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Description

The United Engine & Machine Co KB280.STD is a hypereutectic piston designed for Mopar engines. It is constructed from 390 aluminum alloy and heat-treated to T6 standards, making it 30 percent stronger than ordinary pistons.

These pistons feature a 4.382 inch bore size and a 3.750 inch stroke, with a compression height of 1.327 inches. The ring pack includes 5/64, 5/64, and 3/16 inch grooves, and the pin diameter is 27.8mm.

Fitment

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Specifications

BrandUnited Engine & Machine Co
Part NumberU00B KB280.STD

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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