From the guys at AEROZINE are their new 7075 track 144bcd chainrings, designed to work with their latest track cranks, or any 144bcd cranks.
Material: 7075 4mm Aluminum. Hyper accurate, fully CNC-machined.
Now in 55-65 tooth options for some serious over gear training, or wind up the big gear as you dive down the banking to chase that 200m flyer time.
Check out the Aerozine cranks as well