Engines and Components› Pistons and Piston Rings

United Engine & Machine Co

KB HYP PISTON KIT SBC 305

$572.56

SKU: U00B KB144KTM.030

In Stock
In Stock
Ships by Jun 7
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Non-Returnable Item
INSTALL DIFFICULTY
DIY PRO SHOP

Professional / shop required

Description

The Keith Black KB144-030 Hypereutectic Piston Kit is designed for Chevrolet Small Block 305 engines, featuring a low expansion 390 alloy for tighter piston-to-wall running clearance. This kit includes eight pistons with fully machined heads, valve reliefs, triple spiral lock rings, and CNC machined pin bores. It also incorporates an accumulator groove for enhanced compression ring seal, machined-in oil returns, diamond-finished skirts, and mini grooves to reduce scuffing. Wrist pins and spiral locks are included, but piston rings are sold separately.

Fitment

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Specifications

BrandUnited Engine & Machine Co
Part NumberU00B KB144KTM.030

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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