Uni Filter 2018 - 2019 Honda CRF 250 R / 2017 - 2020 CRF 450 R / 2017 - 2024 CRF 450 RX Air Filter

NU-4148ST

• Designed to fit in the factory airbox UNI FILTER’s high air flow, superior dirt stopping ability, and long lasting dependability have made the PRO COMP II.
• The bestselling replacement air filter for competition motorcycles.
• The UNI FILTER’s unique two-stage design allows for easy and complete cleaning.
• The outer layer can be used dry as pre-filter allowing for longer intervals between cleanings, or it can be oiled for superior engine protection in unusually wet conditions.
• *The inner filter must always be oiled.

CRF450R
2017
2018
2019
2020
CRF450RX
2017
2018
2019
2020
2021
2022
CRF250R
2018
2019