Engines and Components› Pistons and Piston Rings

United Engine & Machine Co

1 SET KB122.STD/1 SET 4000BM8.STD

$572.20

SKU: U00B KB122KTM.STD

Special Order
Special Order
Ships in 4–6 weeks
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Non-Returnable Item
INSTALL DIFFICULTY
DIY PRO SHOP

Moderate — 2–4 hours

Description

KB Series Hypereutectic 390 Alloy with 16% Silicon Pistons. This is an all-out Hypereutectic T-6 heat treat piston with machining features of their next generation forgings. Significant advantages in compression-restricted classes. Lower conductivity of the alloy and reflective piston top lowers oil temperatures, reduces combustion heat and pressure lost. Tight suggested clearances keep things quiet and reduces oil consumption. Lockrings and pins included at no extra charge. Sets of 8.

Fitment

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Specifications

BrandUnited Engine & Machine Co
Part NumberU00B KB122KTM.STD

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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