SKU: R-1100 | UPC: 024844006394
K&N Universal Rubber Filter Round Tapered 3in Base OD x 2in Top OD x 4in H – 73-78 Honda ATC90
The K&N R-1100 is a clamp-on universal air filter with a tapered round design featuring a 3-inch base outer diameter, 2-inch top outer diameter, and 4-inch height. It fits 1973-1978 Honda ATC90 and 1982 Honda ATC110 models perfectly using its flexible rubber flange. This filter delivers increased airflow for better horsepower and acceleration while trapping dirt with layered cotton gauze.
Key Features
- 4 Layers of Protection: Multiple layers of premium cotton gauze with a tacking agent form a mesh that blocks harmful contaminants for long engine life.
- Clean Every 5 Years: Washable design needs cleaning only every 75000 miles under normal highway conditions, based on 15000 miles per year average.
- Easy Installation: Pre-oiled and ready to use for direct clamp-on fit, providing quick performance gains without tools.
- Engineered Power: Advanced media increases horsepower, acceleration, and overall engine response in ATV applications.
- Rugged Construction: Durable molded rubber flanges absorb vibration and stretch up to 1/16 inch for secure fit on varied intakes.
Product Notes
- Pre-oiled filter is washable and reusable with K&N cleaning kits for repeated performance.
- Store in a dry place and inspect regularly for optimal function.
- Compact design ships quickly with minimal packaging waste.
Installation Notes
- Professional installation recommended.
- Clamp directly to 3-inch to 2-inch tapered intake using provided rubber flange.
- Compatible with stock carburetors on Honda ATC models. no additional hardware needed.
This Part Fits
| Year | Make | Model | Submodel |
|---|---|---|---|
| 1973-1978 | Honda | ATC90 | Base |
| 1982 | Honda | ATC110 | Base |
Why Choose K&N?
- Over 50 years of air filtration expertise for motorsports and powersports.
- Washable filters outlast disposables and reduce landfill waste.
- State-of-the-art manufacturing ensures precise fit and peak airflow.
Frequently Asked Questions
- Q: Does the R-1100 fit my 1975 Honda ATC90?
A: Yes, it clamps securely to the 73-78 Honda ATC90 base model intake with its 3in to 2in tapered flange and 4in height. - Q: What material is used in the filter media?
A: Premium cotton gauze layers treated with a tacking agent for superior dirt trapping and high airflow. - Q: What is the warranty on this filter?
A: Backed by a 1-Year Limited Warranty covering defects in materials and workmanship.
Shipping & Handling
- Method: UPS Ground
- Availability: In stock – ships same or next business day
- Packaging: Secure box 7.5 x 7.25 x 5.75 inches
- Weight: 0.6 lb (0.3 kg)





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