Spider Brake Rotor – 12-19/32″ – Blue – Front. Engineered for riders who push limits, these Spider rotors combine jagged brake discs, titanium floating rotor hardware, and CNC-machined lightweight billet carriers for unbeatable performance. The outer disc, forged from high-carbon 420 stainless steel, is laser cut and CNC-machined to eliminate rough edges and ensure smooth operation. Floating hardware is precision crafted from solid titanium for strength and reduced weight. Complete your setup with the Arlen Ness hub kit, compatible with ABS and non-ABS Harley models, for commanding control every ride.