DBA, Australia�s leading brake rotor manufacturer and brake system supplier, has once again stepped up to the challenge and has come up with an all-new range of Hybrid Composite (HC) two-piece rotors.. Traditional rotors, such as DBA�s STREET SERIES or 4000 SERIES, are made up of a single cast iron piece. Composite rotors, on the other hand, are composed of two separate elements: a cast iron braking surface (disc ring) and an aluminium or steel hat. DBA has been a pioneer and leader in composite rotor technology for decades. Its 5000 SERIES continues to set the standard for two-piece performance rotors, using lightweight 6061 T6 aircraft aluminium hats and NAS bolts to join them to the disc ring.. The last 10 or so years, however, have seen a range of mainly European luxury brands being equipped with a different type of composite rotor, utilising steel hats that are often fixed to the rotor ring by a number of horizontal rivets placed around the outside of the hat, or alternatively by co-casting the rotor ring onto the hat.. DBA, applying its decades-long rotor development experience, has adopted this design and applied its own cast-iron composition for further enhancement. Setting its usual benchmark of at least matching, if not outperforming, the original product, the all-new STREET SERIES Hybrid Composite rotor now offers an attractive replacement alternative to owners of those high-end vehicles. The new range meets R90 requirements, giving customers additional peace of mind they are purchasing a quality product.