Exterior Components› Body Panels and Components
United Engine & Machine Co
CHEVROLET 540 ROD 6.385 STEP DISH +10CC 1V KB HYPER PISTON SET
SKU: U00B KB389.004
Professional / shop required
Description
MIA's Description
They feature a centered pin design and include a spacer ring. The compression ratios vary depending on the application, ranging from 9.6:1 to 10.5:1.
Fitment
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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.
Available on iOS & Android
Specifications
| Brand | United Engine & Machine Co |
| Part Number | U00B KB389.004 |
Videos
Cast vs Hypereutectic vs Forged Pistons | Whats the Difference?
Cast vs. Forged Pistons: Which One is Best for Your Engine?
Engine Failure!? Watch if you are running Hypereutectic pistons!
KB Pistons and Ring End Gap
FORGED VS CAST PISTONS AND PISTON COATINGS EXPLAINED!
The Truth: Cast vs Hypereutectic Pistons - Which One Is Better? | Engine Building 101 |
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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