Description
Stock air filters restrict flow and require frequent replacement—the UNI FILTER NU-4136ST delivers superior airflow while remaining cleanable and reusable for the life of your bike. Two-stage construction separates for thorough cleaning with standard dishwashing detergent, then oils and reinstalls in seconds. Built to fit your Honda CRF250 or CRF450 exactly like OEM, this U.S.-made filter outperforms disposable alternatives in both dirt-stopping capability and performance consistency.
- Fits: Honda CRF250/450 (’03-’09)
- Two-stage design
- Ultra Seal grease groove
- Washable, reusable indefinitely
- OEM airbox fitment
- Maximized airflow
- Made in U.S.A.
- MPN: NU-4136ST






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