Premium oil filters from Hiflo offer you optimal benefit and convince with best quality. For the production of the filters only high quality materials are used. Hilfo is the only filter manufacturer to have its filters tested and certified by TÜV Süddeutschland. The filters are compared in all relevant criteria with the respective original filter. The test can only be passed successfully if the Hiflo filter meets or exceeds the values of the original filter. This ensures that all filters meet the quality requirements of the original equipment. According to TÜV Süddeutschland, the warranty of the motorcycle remains valid when using a replacement filter if a filter of equal or higher quality is used.