WOODCLIFF LAKE, N.J. - Based on the S 1000 RR, the new production 2013 HP4 is the first four-cylinder motorcycle in BMW’s HP family.
BMW claims the model is the lightest four-cylinder supersports bike in the 1000cc class. It has a claimed output of 193 hp and a claimed dry weight of 373 lbs. including the Race ABS. When the bike is race-ready with a 90 percent full fuel tank, it weighs 439 lbs.
The HP4 is a continuation of the HP (High Performance) model series BMW founded in 2005. Each motorcycle is issued with its own HP4 serial number engraved in the upper fork bridge.
The HP4 is immediately ready for use on the race track, requiring no elaborate modifications, yet it also offers “great potential for dynamic road riding,” notes BMW.
The HP4’s passenger seat cover provides the solo-rider look characteristic of the race track. BMW also offers a passenger package as a factory production option, including a passenger seat and footrest system.
The HP4 is standard-equipped with Dynamic Damping Control (DDC). This system allows dynamic damping adaptation of the upside-down fork and spring strut to the specific riding conditions on the road. The damping adapts to the current riding maneuver or road surface by means of sensors and electrically controlled regulation valves.
The HP4 has not only Brembo monoblock brake calipers and 9x floating brake discs at the front, but also a refined Race ABS. As before, the ABS has four different modes for wet surfaces, roads, the race track with supersports tires, and the race track with slicks. New for the HP4: In “Slick” mode, the so-called IDM setting with refined regulation impulses now gives the skilled rider the option of maximum possible deceleration.
The HP4 uses a rear tire in the new format 200/55 ZR 17. The Dynamic Traction Control (DTC) already used in the S 1000 RR has been optimized for supersports use in the HP4. Now the effect of traction control can be adapted in Slick mode to changing road conditions and the rider’s preference.
The HP4 is the first BMW motorcycle to have a Launch Control function that provides active support for the rider in Slick mode to achieve maximum acceleration from standing (for example, on race starts). Launch Control limits engine torque so as to provide the maximum torque transferable to the rear wheel. This means the rider has to focus less on the throttle because he is controlling acceleration solely using the clutch. In addition, when Launch Control is activated, engine torque is reduced as soon as the system detects front wheel lift. This prevents unwanted wheelies when accelerating.