Pro Circuit camshafts and valve springs are two new items available for the 2019 KX450 that provide superior performance over stock. With no ECU tuning or degree changes required these are must-have items for serious racers looking for an advantage over the competition.
Used by many factory teams, the Pro Circuit Camshaft is designed to provide superior performance over stock (HP/torque) by optimizing the valve lift profile. Used in conjunction with Pro Circuit Valve Springs should ensure a valve train free of dynamic bounce.
Pro Circuit Valve Springs allow your engine to run at a higher RPM with increased valve control.
Link: Pro Circuit