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The K&N Engineering Universal Rubber Air Filter, model number knnRU-1780, is designed to provide reliable airflow for a variety of applications including motorcycles, ATV's, generators, and more. Crafted with durable, high-quality materials, this filter features an ultra-strong molded pliable rubber flange that absorbs vibrations and ensures a secure fit. Its flexible design allows for stretching up to 1/16 inch (1.5mm), accommodating various intake sizes and angles to suit your equipment*s specifications. The round straight configuration with an angled flange makes installation straightforward, whether replacing an OEM filter or customizing your setup. This universal air filter is washable and reusable, offering long-term value and consistent performance. When used as a replacement for OEM filters, adjustments to jetting or tuning may be necessary to optimize engine performance. Designed for versatile fitment, it*s ideal for applications where a reliable, high-flow air intake is essential, including racing vehicles, snowmobiles, tractors, and radio-controlled cars. The product complies with Prop 65 requirements and is built to withstand demanding conditions, making it a dependable choice for enthusiasts and professionals alike.
Features:
Fitment:
1981 Honda ATC250R Base
1982 Honda ATC250R 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).
