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Engines and Components› Pistons and Piston Rings

KB PERFORMANCE PISTONS

SBC Flat Top Piston Set 4.030 Bore -5cc

$434.25 $352.76 Save $81.49

SKU: K02K 9902HC.030

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

Moderate — 2–4 hours

Description

The KB Performance Claimer Series Hypereutectic Pistons (Part Number: 9902HC.030) are designed for Chevrolet 350 small block engines. These flat-top pistons feature a a +5cc volume and a 4.030-inch bore. Made from 390 hypereutectic alloy, they offer enhanced durability and performance. Each set includes 8 pistons, weighing 512 grams each, compatible with a 3.480-inch stroke and 5.700-inch rods. They support compression ratios of 10.7:1 (58cc), 10.4:1 (64cc), and 9.1:1 (76cc).

Fitment

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Specifications

BrandKB PERFORMANCE PISTONS
Part NumberK02K 9902HC.030

Videos

KB Pistons and Ring End Gap

KB Pistons and Ring End Gap
How to select the Correct Piston Bore Size for your Engine Build - Real Street Performance

How to select the Correct Piston Bore Size for your Engine Build - Real Street Performance
$1150 sbc's 307,350,400 ci.

$1150 sbc's 307,350,400 ci.
#shorts This Is How We Install Press Fit Pistons - Small Block Chevy - Dome Pistons

#shorts This Is How We Install Press Fit Pistons - Small Block Chevy - Dome Pistons
Why the Chevy Small - Block is the Greatest Engine of All Time

Why the Chevy Small - Block is the Greatest Engine of All Time
Budget Small Block Chevy 350 Rebuild. (Complete Build)

Budget Small Block Chevy 350 Rebuild. (Complete Build)
Stock to Wild? The Budget Small Block Chevy 350 We BUILT at HOME! (The Bankrupt 350)

Stock to Wild? The Budget Small Block Chevy 350 We BUILT at HOME! (The Bankrupt 350)
The Shocking Truth Behind Chevy’s Banned 350 V8 Engine!

The Shocking Truth Behind Chevy’s Banned 350 V8 Engine!
All 5 Generations and All 16 Displacements Explained

All 5 Generations and All 16 Displacements Explained
Forgotten Engines: The 400 Cubic Inch Chevrolet Small Block V8 (1970-1980)

Forgotten Engines: The 400 Cubic Inch Chevrolet Small Block V8 (1970-1980)
20 Shocking Secrets About Chevrolet 350 Small-Block You Didn’t Know!

20 Shocking Secrets About Chevrolet 350 Small-Block You Didn’t Know!
Budget 350 Small Block Build - Vice Grip Garage EP1

Budget 350 Small Block Build - Vice Grip Garage EP1

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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