-12%
Click to zoom in
SKU: HA-4250 | UPC: 024844005656
K&N 86-89 Honda TRX250R 6 inch H 4 inch ID 4.75 inch OD Tapered Conical Air Filter
This K&N HA-4250 is a direct replacement tapered conical air filter designed for 1986-1989 Honda TRX250R ATVs. It installs easily into the OEM airbox providing high airflow and superior dust protection for off-road motocross and dusty trails. Riders gain noticeable horsepower and acceleration without jetting changes or fuel adjustments even at high altitudes.
Key Features
- High Airflow Design: Pleated cotton media creates large filtration area for low restriction high capacity and extended service life in dirty conditions
- Excellent Filtration: Multiple layers of woven cotton gauze capture fine dust while allowing maximum air intake for clean carburetion
- Washable and Reusable: Pre-oiled and ready to install cleans with K&N cleaning kit for repeated use saving money over disposable filters
- Direct OEM Fit: Application specific sealing bead ensures precise fit in factory airbox with 4 inch ID 4.75 inch OD and 6 inch height
- Performance Gains: Increases horsepower and throttle response specifically for off-road ATVs UTVs and side-by-sides
Product Notes
- Pre-oiled media ready for immediate ride no break-in required
- Wash and re-oil every 50 hours of off-road use or as needed based on dust exposure
- Ships in protective box dimensions 7.7 x 5.9 x 5.9 inches product weight 0.85 pounds
Installation Notes
- Professional installation recommended.
- Remove stock filter from OEM airbox drop in HA-4250 no tools or modifications needed
- Compatible with factory airbox hardware seals directly without adapters
This Part Fits
| Year | Make | Model | Submodel |
|---|---|---|---|
| 1986-1989 | Honda | TRX250R | Base |
Why Choose K&N?
- Proven leader in high-performance filtration for powersports since 1969
- Engineered for real-world off-road abuse with durable construction
- Precision molded rubber flange for leak-free sealing and long-term reliability
Frequently Asked Questions
-
Q: Will this filter fit my 1987 Honda TRX250R?
A: Yes HA-4250 fits all 1986-1989 Honda TRX250R models directly into the OEM airbox with exact flange dimensions 4 inch ID and sealing bead -
Q: What material is used in the filter media?
A: Multi-layer oiled cotton gauze pleated for high surface area low restriction and dust-holding capacity in ATV applications -
Q: What is the warranty and maintenance?
A: Backed by One Year Limited Warranty washable with K&N kit re-oil before reuse service intervals up to 50 hours off-road
Shipping & Handling
- Method: Ground shipping via UPS or USPS
- Availability: In stock - ships same or next business day
- Packaging: Secure K&N branded box 7.7 x 5.9 x 5.9 inches
- Weight: 0.85 pounds
Air Filters
Shop automotive air filters and performance intake filters at Black Ops Auto Works for direct-fit air filters, drop-in replacement filters, universal clamp-on filters, cabin air filters, engine breather filters, HVAC filters, pre-filters, velocity stacks and intake filter accessories for cars, trucks, SUVs, Jeeps, muscle cars, diesel trucks, import performance builds and custom intake setups. This Air Filters collection is built for enthusiasts who want cleaner airflow, better filtration, improved engine protection, reusable performance filter options, replacement intake filters and vehicle-specific air filter fitment. Browse air filters for Dodge Charger, Dodge Challenger, Dodge Durango, Jeep Grand Cherokee, Jeep Grand Cherokee Trackhawk, Ram TRX, Chevrolet Camaro, Chevrolet Corvette, Cadillac CT5, Ford Mustang, Ford F-150, Toyota Tacoma, Toyota Tundra, BMW, Honda, Infiniti, Nissan, Porsche and other performance platforms. Shop Automotive Air Filters by Category Find the right air ...
View Air Filters Products
Air Filters - Drop In
Shop drop-in air filters and replacement performance filters at Black Ops Auto Works for direct replacement panel filters, high-flow air filters, reusable air filters, DryFlow filters, oiled filters, foam panel filters, intake replacement filters and vehicle-specific air filter upgrades for cars, trucks, SUVs, Jeeps, diesel vehicles, imports, muscle cars and custom performance builds. This Drop-In Air Filters collection is built for enthusiasts who want a simple air-filter replacement without changing the entire intake system. Drop-in filters are designed to fit factory air boxes or compatible aftermarket intake boxes while supporting cleaner airflow, dependable filtration, easier service and performance-focused maintenance. Shop Drop-In Air Filters by Category Find the right air filter style using related Black Ops Auto Works categories. Shop automotive air filters, direct-fit air filters, universal fit air filters, air filter pre-filters, HVAC and cabin filters, air intake systems...
View Air Filters - Drop In Products
K&N Engineering
Shop K&N Engineering cold air intakes, reusable air filters, oil filters, cabin filters, fuel filters and performance filtration upgrades at Black Ops Auto Works for cars, trucks, SUVs, diesel builds, off-road vehicles, muscle cars, Jeeps, Mopar platforms and custom performance applications. K&N Engineering is one of the most recognized names in automotive filtration and airflow technology. This collection includes K&N cold air intake systems, high-flow replacement air filters, universal clamp-on air filters, drop-in filters, oil filters, cabin air filters, fuel filters, Dryflow filters, filter cleaning kits, intake adapters, air intake accessories and performance filtration parts for street, towing, off-road, diesel and high-performance builds. Shop K&N Engineering Products by Category Find the right K&N performance filtration upgrade using related Black Ops Auto Works categories. Shop cold air intakes, air intake systems, air intake components, automotive air f...
View K&N Engineering ProductsLet customers speak for us
Looks pretty nice
Looks pretty nice, pricing was good and the reinforcement is a big plus.
Randy H.
Black Ops Auto Works
I emailed customer service to inquire about when it would be shipped
I emailed customer service to inquire about when it would be shipped. They checked and emailed me with the answer. Customer service is A1
Ralph J.
Black Ops Auto Works
Installation was easy
Installation was easy. The price is good and it looks great on the truck.
Ralph J.
RHO Small Grille Badge
Looks as good as it fits
Looks as good as it fits,
zachary d.
Seibon 70-73 Datsun 240Z OE Carbon Fiber Hood
Nothing like it
I love it great sound and response
Luis P.
Legmaker Dodge Durango HEMI Short Ram CAI 2011-Present 5.7L
Car totally diferent with the whole kit
Car totally diferent with the whole kit. Ive stood next to wide bodies and my car gets more attention at times . Ive bought the kit twice already.
Ding D.
2015-2023 Dodge Charger Carbon Fiber Wind Splitters
Fantastic emblem! Exactly what I was looking for
Fantastic emblem! Exactly what I was looking for. Great quality emblem.
Jacobus S.
Direct Connection Black Metallic Fender Badge
Worked great for my aftermarket hood on my Chrysler 2023 300C
Worked great for my aftermarket hood on my Chrysler 2023 300C. Thanks
Robert G.
Windshield Washer Squirter Relocation Kit Universal
Easy to install and makes car sound even better
Easy to install and makes car sound even better love the winn
Tracy H.
Legmaker Challenger/Charger Hellcat Demon & Redeye Air Intake
Awesome customer support
Awesome customer support. Had multiple issues with fedex and these guys were excellent in helping me sort everything out. The drop springs are great too! I highly recommend
Anonymous
Swift Spec-R Lowering springs Jeep Grand Cherokee 2011-2021
100/100! perfect CF crafted cold air intake for 6
100/100! perfect CF crafted cold air intake for 6.4 jeep .. even makes my AWE exhaust sound even deeper and you cam here this thing sucking when accelerating even at normal speeds🥶
srt.boizzz
Legmaker 392 TH Short Ram Jeep Grand Cherokee SRT 2012-2021
