K&N RU-1780 Custom Clamp-On Air Filter for ATV/UTV Performance Enhancement

K&N Custom Air Filters can increase horsepower up to 12%. They are available in a wide range of sizes, designs and shapes for virtually every application. K&N Custom Clamp On Air Filters are usually not used with OEM air boxes because of their larger than OEM size. They allow considerably more air flow than a stock air box set-up. Generally up to 25% increase in jet sizes will be required because of K&N filters increased air flow. K&N Clamp on Filters are not street legal.

The K&N RU-1780 Custom Clamp-On Air Filter is engineered to boost airflow and improve engine performance for ATV and UTV applications. Designed with a 3.5-inch outside diameter and a 2.0625-inch inside diameter, this high-flow air filter allows significantly more air to reach your engine compared to stock filters. This increased airflow can lead to a horsepower increase of up to 12%, making it a popular choice for enthusiasts seeking enhanced vehicle performance. Its custom clamp-on design ensures a secure fit and easy installation on compatible models, including specific Honda ATC250R units from 1981 and 1982. The filter's design is optimized for maximum air intake efficiency, which may require jetting adjustments of up to 25% to accommodate the increased airflow and maintain optimal fuel mixture. Please note that these filters are generally not street legal due to their performance-oriented design, making them ideal for off-road use only. Constructed with durable materials, the K&N RU-1780 ensures long-lasting filtration and minimal maintenance, providing consistent performance over time. Whether you're tuning for power or improving airflow for racing or recreational riding, this filter offers a reliable solution to enhance your ATV or UTV's engine intake system.

Features:

• Performance Boost: Increases horsepower by up to 12% for improved engine output

• High-Flow Design: Larger size allows considerably more air to enter the engine compared to OEM filters

• Custom Clamp-On Fit: Easy to install on compatible ATV/UTV models with a secure connection

• Durable Construction: Built with quality materials for long-term use and reliability

• Optimal for Off-Road: Not street legal, designed specifically for off-road applications

Product Type: Air Filters
Outside Diameter: 3.5 in.
Inside Diameter: 2.0625 in.
Segment: ATV/UTV
Division: Intake
Class: Air Filters & Components
Sub Class: Air Filters

FITMENT:
1981 Honda ATC250R
1982 Honda ATC250R