5000 series rotors follow DBA’s 4000 series numbering system with the number prefix of ‘5’, however 5000 series rotors have 2 unique aspects:

• 5000 series rotors are a 2-piece design (Aluminium hats and cast iron rings). As such they are available as a complete assembly ready for direct replacement, or the hat or flat discs (rings) available separately.
• 5000 series rotors are often available with different coloured hats
  When sold as individual components, it is important to note that the rings (flat discs) will start with a suffix of ‘.1’, hats will start with a suffix of ‘.2’, while a complete assembly will not have either ‘.’ Suffix.

In a complete assembly or ‘.2’ hat replacement only, the hat colour will be included in the part number.