K&N off-road replacement air filters are ideal for extended use in dirty and dusty off-road riding and provide clean carburetion even at high altitude. Generally, no jet changes are required with just a K&N filter element. K&N replacement air filters are washable and reusable and provide high air-flow with excellent filtration.
Specifications:
- Product type: Drop-In Air Filter
- Style: Round Air Filter
- Shape: Round
- Media: Cotton Gauze
- Washable and reusable: Yes
- Height: 3 in (76 mm)
- Outside diameter: 3 in (76 mm)
- Inside diameter: 1.688 in (43 mm)
- Flange ID: 1.938 in (49 mm)
- Re-oil amount: 0.22 oz (6 ml)
- Package contents: 1 Air Filter, 1 K&N 1oz Sealing Grease
- Warranty: 1 Year Limited
- Part number: HA-1088
Vehicle Applications:
- 2004-2013 Honda CRF100F 100
- 2004-2013 Honda CRF80F 80
- 1993-2006 Honda TRX90 90
- 2007-2008 Honda TRX90EX 90
- 2019-2025 Honda TRX90X 86
- 2009-2018 Honda TRX90X 90
- 1985-2003 Honda XR100R 100
- 1985-2003 Honda XR80R 80
FAQ
What does the K&N HA-1088 fit?
It fits 1985-2025 Honda TRX90X, CRF100F, CRF80F & TRX90EX & more. Check your exact year, make, model and engine against the vehicle application list before ordering.
Is the K&N HA-1088 washable and reusable?
Yes. The K&N media is washable and reusable; clean and re-oil it with a K&N Recharger kit instead of replacing it.
What warranty does it carry?
It is backed by the K&N 1 Year Limited Warranty.

