Ducati Panigale V4 R/S 2018-22 TK Carbon Disc Covers (Used with TK Discs ONLY)Ducati Panigale V4 R S 2018 22 TK Carbon Disc Covers (Used with TK Discs ONLY) TK discs are born from the combination of high technologies and the careful choice of materials and treatments. Conceived from experience, built with passion and tested on the track! There are several strengths of these discs: MATERIAL The materials use for the production are the result of years of constant research and development on the competition fields, their quality,