Exterior Components› Body Panels and Components

United Engine & Machine Co

FORD 2.3L ROD 5.700 FLAT TOP 2V KB HYPER PISTON SET (4PK)

$72.67

SKU: U00B KB217.030

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Description

The United Engine & Machine Co KB217.030 is a set of four hypereutectic pistons designed for high-performance applications. These pistons feature a flat top design with two valve reliefs and a 4.5cc dish. They are manufactured with a low expansion 390 alloy containing 16% silicon, allowing for tighter piston-to-wall running clearance.

Key specifications include a standard bore size of 3.780 inches (with this set at 3.810 inches), a crankshaft stroke of 3.126 inches, and a rod length of 5.205 inches. The compression height is 1.590 inches, and they come with OE deck height of 8.368 inches. The wrist pin size is 0.912 inches, and the piston ring size is 1/16 x 1/16 x 3/16.

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Specifications

BrandUnited Engine & Machine Co
Part NumberU00B KB217.030

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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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