Part no. RHK-0.3.38 Fitment: Yamaha TTR 250 1994-2016 Yamaha TT350 1989-1994 Yamaha WR 250R 2007-2021 Yamaha WR 250X 2007-2017 RHK Filters are designed and manufactured to increase airflow whilst ensuring the ultimate level of protection. RHK Filters consist of an outer layer of coarse open-pore foam which catches large dirt, grime and sand particles. The 2nd inner layer of fine open-pore foam aids in catching minute & finer particles whilst delivering maximum air flow.