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Air and Fuel› Air Cleaners, Filters, Intakes and Components

RFX

AIR FILTER YAM

Name: AIR FILTER YAM
Brand: RFX
SKU: FXAF 40003 55NO

$22.99

SKU: FXAF 40003 55NO

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$100 Minimum Order

30 Days Return

DIY PRO SHOP

Beginner — under 30 min

Overview

The RFX FXAF 40003 55NO air filter is designed for optimal airflow in Yamaha YZ450F models from 2010 to 2013. It features a twin-layered foam construction for efficient filtration and engine protection. Produced by Multi Air with over 30 years of experience, this filter is suitable for all riding levels.

Constructed with breathable, nonflammable foam (on 4-stroke models), this RFX air filter ensures reliable performance and safety. The precise fitment guarantees compatibility and straightforward installation, helping to maintain peak engine performance and longevity for your Yamaha YZ450F.

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New to the RFX range and produced by Multi Air, the RFX Air filter is the perfect choice for all levels. Let your bike breath with twin layered foam and precise fitment. With over 30 Years experience, Multi Air is a name you can trust.

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

Brand	RFX
Part Number	FXAF 40003 55NO
Category	Air Filters

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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.

Free shipping over $200 in the continental US. Alaska, Hawaii, U.S. territories (Puerto Rico, U.S. Virgin Islands, Guam, American Samoa, and the Northern Mariana Islands), and international orders carry surcharges — most appear at checkout. Some exceptions (LTL freight, or suppliers who quote freight only after we place the order) won’t. In those cases we’ll reach out with the exact charge before your order moves forward.

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