Motorcycle Filter Cleaner For CRF 250R 450R 2013-2017 Works for Fit For CRF250R 2014-2017 CRF450R 2013-2016 offroad motorcycle system box installation size no or extra mounting parts needed Effectively blocks dust mud sand debris to cylinder piston internal engine components density layered filter medium good permeability ensures stable fuel mixture power output Standard outer frame dimension consistent with filter replacement specifications