Air and Fuel Air Cleaners, Filters, Intakes and Components

K&N Engineering

K&N 03-08 Honda CRF450R / 04-09 Honda CRF250R Replacement Drop In Air Filter

$199.99

SKU: K001 HA-4503XD

Special Order
Special Order
Ships in 4–6 weeks
Free Shipping over $200
$100 Minimum Order
Non-Returnable Item
INSTALL DIFFICULTY
DIY PRO SHOP

Beginner — under 30 min

Overview

The K&N HA-4503XD is a powersports performance air filter designed for Honda CRF250R and CRF450R models. It features a large surface area for extended service life and low restriction, offering outstanding filtration. The filter is washable and reusable, and comes pre-oiled and ready to use. Its unique air filter shape and two-piece design facilitate easier installation and removal on modern MX bikes.
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Part #: HA-4503XD

K&N XStream Series Motocross Air Filters take performance to the next level with the addition of a filter within the filter's top in order to add even more filtration area for high air-flow and capacity. Each filter piece has pleated media which creates a large surface area that provides high airflow and great dirt holding capacity for extreme conditions. The two-piece design eases installation and removal on modern narrow-framed MX bikes. The epoxy-coated aluminum wire mesh, incorporated into a backfire screen, protects the filter element from harmful debris. A custom base seal ensures a precise and secure fit. K&N air filters are washable and re-usable and they come pre-oiled and ready to use!

K&N XStream series motocross air filters take performance to the next level with the addition of a filter within the filter's top in order to add even more filtration area for optimum air-flow and capacity.

This product may expose you to chemicals known to the State of California to cause cancer, birth defects, or other reproductive harm.

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

BrandK&N Engineering
Part NumberK001 HA-4503XD

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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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