Engines and Components› Pistons and Piston Rings

United Engine & Machine Co

9906 HARLEYDAVIDSON TWIN CAM/88 BIG BORE 95CI/1.55L OS .020 PISTON SET

$130.33

SKU: U00B KB906C.020

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Description

The United Engine & Machine Co KB906C.020 is a set of forged aluminum pistons designed for performance applications. These pistons are constructed from 4032 forged alloy with an 11% silicon content.

Featuring a bore of 3.900 inches and a stroke of 4.000 inches, they offer a compression ratio of 10.5:1. These pistons are engineered for Twin Cam 88 (95ci) engines from 1999-06.

Fitment

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Specifications

BrandUnited Engine & Machine Co
Part NumberU00B KB906C.020

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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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