Part no. RHK-0.1.06 Fitment: Honda CR 125r 1989-1999 Honda CR250R 1988-1999 Honda CR500R 1989-1999 "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."