09-14 YAMAHA YZF-R1: BMC Air Filter Higher air flow than OE filter for maximum power Race-tested for performance and reliability Race filters increase air flow by 25% over standard BMC filters (Recommended for track use only) Endorsed by Yoshimura <a href="https://www.amazon.com/b?node=14770868011"> International products </a> have <a href="https://www.amazon.com/gp/help/customer/display.html/ref=nav_cs_help?ie=UTF8&nodeId=202045290"> separate terms, </a> are sold from abroad and may differ from local products, including fit, age ratings, and language of product, labeling or instructions. Manufacturer warranty may not apply <a href="https://www.amazon.com/b?node=14770868011">Learn more</a> about Amazon Global Store.