Exterior Components› Body Panels and Components

United Engine & Machine Co

FORD 302 ROD 5.090 FLAT TOP +4CC 2V KB HYPER PISTON SET

$74.63

SKU: U00B KB311.060

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

Professional / shop required

Description

The United Engine & Machine Co KB311.060 is a set of 8 hypereutectic pistons designed for high-performance applications. These pistons feature a flat top design with two valve reliefs and a 4.060 in. bore.

Constructed from a 390 aluminum alloy and heat-treated to T6 standards, these pistons are 30% stronger than untreated hypereutectics. They are 100% CNC-machined with a high upper compression-ring location, gas-accumulator groove, drilled oil returns, and spiral-lock retainer grooves. The lightweight, rigid-rib skirt design helps stabilize the piston in the bore, offering improved oil control, reduced blow-by, increased ring life, and elimination of cold start-up knocking.

Fitment

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Specifications

BrandUnited Engine & Machine Co
Part NumberU00B KB311.060

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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