Exterior Components› Body Panels and Components

United Engine & Machine Co

CHEVROLET 350 ROD 5.700 FLAT TOP +7CC 4V KB HYPER PISTON SET

$73.59

SKU: U00B KB228.020

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Description

The United Engine & Machine KB228.020 is a set of eight hypereutectic pistons designed for SB Chevy 350 engines. These pistons feature a 4.020-inch bore, a 3.480-inch crankshaft stroke, and a 5.700-inch rod length.

Key features include flat-top pistons with 7cc valve reliefs, a compression height of 1.561 inches, and a hypereutectic aluminum construction. The pistons are CNC machined for precision and come with wrist pins and spiral lock rings. Note that piston rings are not included.

Fitment

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Specifications

BrandUnited Engine & Machine Co
Part NumberU00B KB228.020

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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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