The K&N HA-6806 is a round, straight-profile replacement engine air filter for the Honda Rincon 680 (TRX680FA) and Rincon GPScape (TRX680FGA) four-wheelers. Its media is built from multiple layers of woven cotton gauze, and the manufacturer says the element seats directly in the factory airbox using an application-specific sealing bead. Unlike a disposable stock filter, it is washable and reusable, so you clean and re-oil it instead of replacing it. The manufacturer says it is designed to deliver higher airflow while keeping strong filtration, which suits riders who run dusty trails, and it also states that it helps maintain clean carburetion at high altitude.
The manufacturer states that no fuel management modifications are required to gain the performance benefit, and that a K&N element generally does not need jet changes. That makes it a practical Rincon 680 air filter upgrade for owners who want a drop-in change without re-tuning the carburetor. For a Rincon 680 intake filter search, the key points are the factory airbox fit, the washable cotton gauze construction, and the lack of jetting requirements. Before you order, confirm your model year against the manufacturer's current fitment list, because published year coverage varies between sources.
The manufacturer states that generally no jet changes are required when using only the K&N filter element, and that no fuel management modifications are needed to obtain the increased performance.
Yes. The manufacturer describes the filter as washable and reusable, and says most of its K&N filters are pre-oiled and ready to use. Check the filter's oiling state when you unpack it, and re-oil after cleaning using the manufacturer's stated amount of about 0.79 oz (23 ml).
Published year coverage differs between the manufacturer's own product pages and other listings. The manufacturer lists the TRX680FA and TRX680FGA models, but confirm your exact model year with the manufacturer before ordering.
