Up for sale is LYNDALL BRAKES 2005-2007 FLSTSC Softail Springer Classic Harley Davidson 9 SPOKE ROTOR FRONT BLK/SIL BOW TIE 11.5". The vendor part number is 4002-1133. Helical retaining ring that securely fastens the friction ring to the carrier center in a way that prevents our floating rotor from becoming loose or noisy after the course of its service life.