ABS Pro was developed for use on public roads, where unexpected surprises are always a concern. Although the HP4’s Race ABS provides a high degree of safety when braking in a straight line, ABS Pro works its magic in corners by lessening the destabilizing forces that occur when the brakes are applied quickly in a bend. ABS Pro adapts to the bike’s lean angle, which is determined by the same sensors for roll rate, yaw rate and transverse acceleration that are used for the bike’s Dynamic Traction Control and Dynamic Damping Control. Basically, as lean increases, the brake pressure gradient is limited more and more at the start of braking. Pressure build-up is also slower, and pressure modulation within the ABS control range is more even.