Part no. RHK-0.4.22 Fitment: Suzuki DRZ400 2000-2021 Suzuki DRZ400E 2000-2022 Suzuki DRZ400S 2000-2017 Suzuki DRZ400SM 2005-21 Kawasaki KLX 400 2003-2005 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.