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The K&N R-1100 universal air filter is designed to deliver reliable airflow for a variety of vehicles and equipment, including motorcycles, ATVs, generators, and racing engines. Constructed with durable molded pliable rubber flanges, this filter absorbs vibrations and ensures a secure fit, even accommodating slight size differences of up to 1/16 inch. Its tapered round design features a 3-inch base diameter, narrowing to a 2-inch top diameter, and stands approximately 4 inches tall, making it suitable for multiple applications. K&N's universal filters are built to be washable and reusable, allowing for long-term use and cost savings. When used as a replacement for OEM filters, some modifications to jetting or air intake systems might be necessary to optimize performance.
Features:
Fitment:
1973 Honda ATC90 Base
1974 Honda ATC90 Base
1975 Honda ATC90 Base
1976 Honda ATC90 Base
1977 Honda ATC90 Base
1978 Honda ATC90 Base
1982 Honda ATC110 Base
Order Processing
All orders are processed and shipped within 24 hours of purchase (excluding weekends and holidays).
Orders placed after 3:00 PM EST may ship the following business day.
Shipping Methods
Customers select their preferred shipping method and speed at checkout.
Shipping times are determined by the carrier and cannot be guaranteed by us.
Tracking information will be provided once your order has shipped.
Shipping Coverage
If your package arrives damaged, please notify the delivery driver immediately and contact the shipping carrier to file a claim.
You must report any missing or damaged items within 14 days of delivery.
After this time, we cannot be held responsible for lost or damaged items.
Return Window
You have 30 days from the date of delivery to request a return.
After 30 days, we are unable to accept returns, exchanges, or refund requests.
Eligibility
Items must be returned in their original condition—unused, unwashed, and with all tags and packaging intact.
Certain products may not be eligible for return (e.g., special-order items, customized products, or perishable goods).
Items that have been altered, installed, or modified cannot be returned.
Return Process
Contact our Customer Support team to request a Return Authorization (RMA) before sending items back.
Once your return is approved, you’ll receive instructions on where to send the product.
Customers are responsible for return shipping costs unless the item was defective or incorrect.
Refunds
Refunds are issued to the original payment method once the returned item has been received and inspected.
Please allow 5–10 business days for the refund to appear on your account.
In some cases, a restocking fee may apply (if applicable, this will be disclosed during your return authorization).
