Provides unbeatable performance and exceptional value, Hiflo filters are the best-selling brand of aftermarket filters for motorcycles worldwide To achieve our high quality and to ensure the consistency of our products, we use only premium raw materials from well known manufacturers Every oil filter goes through 16 individual quality control checks before it is ready to leave the factory. The whole manufacturing process, including the checking of raw materials and individual filter testing, is regularly audited and verified independe Race filters have a welded-on 5/8"/17mm nut with safety wire provisions to make installation and removal easier