Better air flow means more power. Cleaner air means increased engine longevity. Now you can have the best of both worlds with the WORKS High-flow Drop-in Air Filter for the Evolution X. This direct drop-in replacement for the factory filter flows twice as much as the stock filter. Constructed of multilayer, uniform cotton fabric with stainless steel mesh reinforcement, this unit will filter particles down to several microns with very high saturation. The reusable element is easily cleaned, re-oiled and back in your factory airbox in a matter of minutes with the Works Service Kit. Pays for itself after only 4 scheduled maintenance periods in comparison to continually buying factory replacements. Includes one pre-oiled filter and simple installation instructions.Features: