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Engines and Components› Pistons and Piston Rings

KB PERFORMANCE PISTONS

SBC Domed Piston Set 4.030 Bore +14cc

$443.84 $360.22 Save $83.62

SKU: K02K 9903HC.030

In Stock
In Stock
Ships by Jun 8
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Non-Returnable Item
INSTALL DIFFICULTY
DIY PRO SHOP

Moderate — 2–4 hours

Description

The KB Performance 9903HC.030 is a Claimer Series Hypereutectic Piston with a 4.030" bore, 5/64 x 5/64 x 3/16" ring grooves, and a plus 14.0 cc dome, designed for Small Block Chevy engines. Made from a high-silicon aluminum alloy, these pistons are lightweight and strong, featuring race-ready elements for high performance.

Fitment

Fitment Guaranteed

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Log your build in the MOTORMIA app and we’ll guarantee this part fits your exact setup — or your money back, return shipping covered.

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Specifications

BrandKB PERFORMANCE PISTONS
Part NumberK02K 9903HC.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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