Exterior Components› Body Panels and Components

United Engine & Machine Co

CHEVROLET 383 ROD 5.700 FLAT TOP +7CC 2V KB HYPER PISTON SET

$68.13

SKU: U00B KB134.030

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Description

The United Engine & Machine Co KB134.030 is a set of eight hypereutectic pistons designed for high-performance applications. These pistons feature a flat-top design with two valve reliefs and are made from a low-expansion 390 alloy with 16 percent silicon, allowing for tighter piston-to-wall running clearance.

They are intended for SB Chevy engines with a 383ci displacement, a standard bore size of 4.000 inches, a 3.750-inch crankshaft stroke, and a 5.700-inch rod length. The compression height is 1.433 inches, and they are designed with a centered pin location.

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Specifications

BrandUnited Engine & Machine Co
Part NumberU00B KB134.030

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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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