Exterior Components› Body Panels and Components

United Engine & Machine Co

FORD 351W ROD 5.956 SOLID DOME 5CC 2V KB HYPER PISTON SET

$70.43

SKU: U00B KB314.STD

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Description

The United Engine & Machine KB314.STD is a set of eight hypereutectic pistons designed for Ford 351W engines with a 4.000-inch bore and 3.500-inch stroke. These pistons feature a dome style with two valve reliefs and a 1.774-inch compression height, contributing to a 12.4:1 compression ratio with 61cc combustion chambers.

Constructed from a low-expansion 390 alloy with 16% silicon, these pistons allow for tighter piston-to-wall running clearance. They include fully machined head and valve reliefs, triple spiral lock rings, CNC-machined pin bores, an accumulator groove for improved ring seal, machined oil returns, and diamond-finished skirts.

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Specifications

BrandUnited Engine & Machine Co
Part NumberU00B KB314.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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