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

UNIFILTER

Uni Filter 18-19 Honda CRF 250 R / 17-20 CRF 450 R / 17-24 CRF 450 RX Air Filter

$40.30

SKU: U01K NU-4148ST

Special Order
Special Order
Ships in 4–6 weeks
Free Shipping
Non-Returnable Item
INSTALL DIFFICULTY
DIY PRO SHOP

Beginner — under 30 min

Description

The UNIFILTER NU-4148ST is a multi-stage competition air filter designed to enhance your vehicle's air intake system. It features a unique two-stage foam design that can be used dry for extended periods of airflow or oiled for wet conditions.

Fitment

Fitment Guaranteed

Don’t gamble
on fit.

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

BrandUNIFILTER
Part NumberU01K NU-4148ST

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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