Exterior Components› Body Panels and Components

United Engine & Machine Co

CHEVROLET 350 ROD 5.700 FLAT TOP +6CC 2V KB PISTON SET

$72.99

SKU: U00B KB6231.020

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Description

The United Engine & Machine Co. KB6231.020 is a set of pistons designed for performance applications. These pistons feature a hypereutectic aluminum construction, a flat top with two valve reliefs, and a 4.000 in. bore. They include a 3.480 in. stroke, a 5.700 in. rod length, and a 1.561 in. compression height.

The ring grooves are sized at 1/16 in., 1/16 in., and 3/16 in. The piston head volume is +6.00cc, and they utilize a press-fit or floating wrist pin style with a 0.927 in. pin diameter. The set includes wrist pins and retainers, but piston rings are sold separately. This product is sold as a set of 6.

Fitment

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Specifications

BrandUnited Engine & Machine Co
Part NumberU00B KB6231.020

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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