Description
A quality air filter directly impacts engine performance, throttle response, and longevity—especially on high-demand engines like the CRF150/230F. The UNI Filter NU-4137ST delivers superior airflow while trapping dirt more effectively than OEM filters, and its reusable design eliminates recurring replacement costs. Built for serious riders who refuse compromise on engine protection or performance.
- Two-stage design, maximum airflow
- Washable, reusable construction
- Ultra Seal grease groove included
- Stock airbox fitment (no modification)
- Clean with dishwashing detergent
- Made in U.S.A.
- CRF150/230F specific fitment
- Superior dirt stopping capability
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