From Kyle Chin:
Orangatang is proud to present our 70mm 4 President and 75mm In Heat racing/hard carving wheels in a new machined aluminum core version (the standard version will still be available). The added mass yields higher rotational inertia, while the higher stiffness results in increased traction and more even wear patterns. These will initially be offered in our orange 80a formula.
Aluminum core 4 Prez and In Heats will be available worldwide on Monday, February 28.