K&N - High-Flow OEM Air Filter (YA-7007) Options:YA-7007 HeadStraight Full with a damper:

HeadStraight Full with a damper: Includes all the above plus a new Scotts damper with the correct arm installed on it

The S2 alone is more powerful than that stock light by at least twice

valve covers etc much easier

Improved durability and reliability

Available in gold or black

K&N - High-Flow OEM Air Filter (YA-7007) Options:YA-7007 HeadStraight Full with a damper:Designed to provide increased performance Pleated media provides a large filtration area offering long service intervals Multi Layers of woven cotton gauze media offers excellent filtration Fits directly into OEM Airbox with application specific Sealing Bead to ensure a precise fit Fuel Management modifications are not normally required for increased performance Washable & reusable, pre oiled and ready to ride!