Removed from a low hour 2017 yz125. These are easy to clean and adds air flow. This should fit several models but please do your research. From the manufacturer: To give your bike plenty of clean air and give yourself a filter that’s easy to clean and quick to swap, pick up a K&N MX XStream Air Filter. Because with the XStream, you get more airflow, more filter surface area, and a much easier installation compared to most stock filters. Thanks to the multiple layers of cotton filter media, each pleat on the XStream is able to grab more debris while still retaining great airflow. It does this by integrating a top cap that is a filter itself, full of pleated filter media that provides increased surface area. More surface area equals more filtered air coming in for your engine to use. Even better is that with the removable top cap, changing filters is easy because you’ll be able to see the interior position of the filter and check to ensure that it’s properly seated . You also won’t have to mess with lining up filter mounting hardware, just put the top cover on and everything aligns itself. Specs: Increased filtration area with several pleats and filter media in top cap Better dust holding capability compared to your stock filter Epoxy-coated aluminum mesh backfire screen helps capture larger particles Custom base seal provides a precise and secure fit Washable and reusable Comes pre-oiled and ready to use Fits in your stock air box, no modification necessary Increased filtration area provides more air-flow while the 4 layers of woven premium cotton media allow for increased filtration XStream technology integrated into a two piece High-Flow Air Filter Two piece design makes installation, changing and cleaning a breeze This part number fits the following vehicles: SUZUKI RM125 2006–2007 SUZUKI RM250 2006–2008 SUZUKI RMZ250 2007–2018 SUZUKI RMZ450 2005–2017 YAMAHA WR250F 2001–2002 YAMAHA WR400F 1998–2000 YAMAHA WR426F 2001–2002 YAMAHA YZ125 1991–1992 YAMAHA YZ125 1997–2023 YAMAHA YZ125 Monster Energy Yamaha Racing Edition 2023 YAMAHA YZ125X 2020–2023 YAMAHA YZ250 1991–1992 YAMAHA YZ250 1997–2023 YAMAHA YZ250 Monster Energy Yamaha Racing Edition 2023 YAMAHA YZ250F 2001–2013 YAMAHA YZ250X 2016–2023 YAMAHA YZ400F 1998–1999 YAMAHA YZ426F 2000–2002 YAMAHA YZ450F 2003–2009