InfoCrank M30 and InfoCrank Classic is more readily available as a 110BCD, often known as a Compact set. Our chainring supplier, the respected US company Praxis Works, is not currently producing 53/39 chainrings. 

Some other bike chainring manufacturers do make a 53/39T pair to fit 110BCD, and we may offer at least one of these in due course, if it performs to our standards. Our crankset is designed for precise chainring shifts as well as accurate power metering.