Exterior Components› Body Panels and Components

United Engine & Machine Co

FORD 501 ROD 6.800 DCUP +20CC 1V KB HYPER PISTON SET

$79.42

SKU: U00B KB152.040

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Special Order
Ships in 4–6 weeks
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Non-Returnable Item
INSTALL DIFFICULTY
DIY PRO SHOP

Moderate — 2–4 hours

Description

The United Engine & Machine Co. KB152.040 is a set of eight hypereutectic aluminum pistons designed for high-performance applications. These pistons feature a dish-style head with a 20cc volume and a 1.430-inch compression height, compatible with a 4.400-inch bore and a 4.140-inch crankshaft stroke.

Constructed from a low-expansion 390 alloy with 16% silicon, these pistons allow for tighter running clearances. They include fully machined head and valve reliefs, triple spiral lock rings, CNC-machined pin bores, an accumulator groove, and machined oil returns. The pistons also feature diamond-finished skirts and mini grooves to reduce scuffing and overheating.

Fitment

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Specifications

BrandUnited Engine & Machine Co
Part NumberU00B KB152.040

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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