Exterior Components› Body Panels and Components

United Engine & Machine Co

PONTIAC 400 ROD 6.663 DOME 10CC KB HYPER PISTON SET

$78.46

SKU: U00B KB422.STD

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In Stock
Ships by Jun 15
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Non-Returnable Item
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Description

The United Engine & Machine Co KB422.STD is a set of eight hypereutectic pistons designed for Pontiac 400 engines. These pistons feature a dome style with a 10cc volume and a 9.4:1 compression ratio with a 100cc chamber.

They are built with a 4.120-inch bore size, 3.750-inch crankshaft stroke, and a 6.663-inch rod length. The pistons have a 1.710-inch compression height and include CNC machined pin bores for accuracy. Wrist pins and spiral locks are included, but piston rings are sold separately.

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Specifications

BrandUnited Engine & Machine Co
Part NumberU00B KB422.STD

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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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