Engines and Components› Pistons and Piston Rings

United Engine & Machine Co

8499 HARLEYDAVIDSON EVOLUTION 80CI/1340L OS .020 PISTON SET

$94.30

SKU: U00B KB258.020

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Special Order
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Non-Returnable Item
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DIY PRO SHOP

Advanced — 4+ hours

Description

8499 HARLEYDAVIDSON EVOLUTION 80CI/1340L OS .020 PISTON SET

MIA's Description

The United Engine & Machine Co KB258.020 is a piston kit designed for 80 cubic inch (ci) engines. This kit features hypereutectic cast pistons made from a high silicon (16%) alloy, offering improved wear resistance and heat management. The pistons have a flat top design and a compression ratio of 8.5:1.

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

BrandUnited Engine & Machine Co
Part NumberU00B KB258.020

Videos

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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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