**Service performed on YOUR rotors that are sent to Defined Autoworks**
Scalloping a rotor provides increased intake port duration. This gives a longer period of time for the engine to beathe during the intake cycle. Adding this to a streeport setup will give similar results of a bridgeport but with a less aggresive driving characteristic. Adding this to a bridgeport will provide even more intake duration more similar to a full peripheral port engine. Please see our knowledge resource tab for more information regarding port type.
Scalloped Rotor Service 26b 4-rotor
Scalloping is a CNC service done to factory rotors. This modification is excellent for racing classes where bridgeporting or even streetporting is illegal. It also works great for street applications
Once purchased please mail YOUR rotors to Defined Autoworks for modification. Return shipping is TBD based on location