Ducati Streetfighter V4 Models (2020 - On) Clutch Spring Ring Silver. CNC RacingDescription Clutch Spring Pressure Plate . Upgrading your Ducati Clutch set up to the CNC Racing Clear Clutch Set up? This Clutch Plate Retainer Ring has been designed by CNC Racing to replace the OEM Component so when installed in conjunction with the CNC Racing Clear Clutch Cover and Upgraded Pressure Plate, this Retainer Ring completes the set up and adds to the visuals of the bike! Manufactured from Billet Aluminium and then treated to a coloured