Exterior Components› Body Panels and Components

United Engine & Machine Co

CHEVROLET 305 ROD 5.700 DCUP +12CC 2V KB HYPER PISTON SET

$74.14

SKU: U00B KB145.030

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Description

The United Engine & Machine Co KB145.030 is a set of eight hypereutectic aluminum pistons designed for performance applications. These pistons feature a dish style with a D-shaped cup and a 3.766-inch bore.

Constructed from 390 aluminum alloy and heat-treated to T6 standards, these pistons are 30 percent stronger than untreated hypereutectics. They include 100 percent CNC-machined crowns, high upper compression-ring location, gas-accumulator groove, drilled oil returns, and spiral-lock retainer grooves for enhanced performance. The lightweight, rigid-rib skirt design stabilizes the piston in the bore, leading to improved oil control, reduced blow-by, increased ring life, and elimination of cold start-up knocking.

Fitment

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Specifications

BrandUnited Engine & Machine Co
Part NumberU00B KB145.030

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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