"Sprint Filter P08F1-85 - The Ultimate Performance Air Filter Replaces OEM part no. AP8104329 Sprint Filter is Official Technical Supplier of the HRC Repsol Honda Team Official Technical Supplier of Aprilia Racing Official Supplier of Ducati 2020 P08F1-85 is the ultimate performance air filter available from Sprint Filter, developed over two years and currently in use by top race teams in MotoGP and World SBK. In independent testing carried out by University of Wales - Trinity St David, Sprint Filter's P08 polyster tissue, the "standard" tissue found in Sprint Filter replacement air filters