The McCormick 3101603R1 is a genuine OEM brake disc designed for various McCormick C and CX series agricultural tractors. This essential component provides reliable and consistent braking performance. With an outer diameter of 178 mm, an inner diameter of 100 mm, and a thickness of 4.5 mm, this brake disc features 20 spline teeth for precise fitment and engagement. It is compatible with models such as C50, C60, C70, C80, C90, CX50, CX60, CX70, CX75, CX80, CX85, CX90, CX95, CX100, CX105, CX110, CX110L, and CX110LP.