Engines and Components› Pistons and Piston Rings

United Engine & Machine Co

0718 HARLEYDAVIDSON TWIN CAM/88 BIG BORE 103CI/1.70L OS .020 PISTON SET

$130.33

SKU: U00B KB907C.020

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Description

The United Engine & Machine Co KB907C.020 piston is a forged alloy piston designed for Twin Cam 96 to 103ci engines. It features a 9.5:1 compression ratio and a .020 oversized bore.

Constructed from 4032 forged alloy with 11% silicon content, these pistons offer superior crack resistance under detonation. They are suitable for street or race applications and can handle power adders like NOS or supercharger boost. The kit includes rings, wrist pins, and wrist pin locks.

Fitment

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Specifications

BrandUnited Engine & Machine Co
Part NumberU00B KB907C.020

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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