Engines and Components› Engines, Blocks and Components

Lifan

125cc 4-Stroke Engine Assembly

$368.43

SKU: 1P54FMI

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In Stock
Ships by Sep 12
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$100 Minimum Order
30 Days Return
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Overview

The Lifan 1P54FMI is a 125cc 4-stroke engine assembly. This single-cylinder, OHC, air-cooled motor features a bore and stroke of 54 x 54mm and a displacement of 123.7cc. It has a compression ratio of 9.47:1.
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The Lifan 1P54FMI is a complete 125cc 4-stroke racing engine motor assembly. Key specifications include a 54 x 54mm bore and stroke, resulting in a displacement of 123.7cc. The engine also features a 9.47:1 compression ratio. It is compatible with 125cc 4-speed manual clutch transmissions and is often found in models from brands like Coolster and CRF, as well as Honda bikes. This engine assembly is a direct replacement or upgrade option for vehicles utilizing the 1P54FMI engine code.

Product descriptions are provided by our supplier partners and may not always be perfectly accurate. Not sure this fits? or call (760) 282-4645 and we’ll verify before you order.

Fitment

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Specifications

BrandLifan
Part Number1P54FMI
CategoryEngines and Components

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Returns & Fitment

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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Shipping

Orders are processed in 1–3 business days. In stock parts ship promptly from our partner network. Special-order items either aren’t currently stocked or are built to your spec — expect 4–6 weeks. If a part goes on backorder while your order is in the queue, we’ll reach out and work through discounted alternatives together.

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