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2013 BMW S1000RR HP4

2013 BMW S1000RR: The HP4 uses the same 999cc, 193-horsepower inline four as the base S1000RR, recalibrated to boost torque between 6000 and 9750 rpm. An all-titanium Akrapovic exhaust cuts 9.9 pounds, and forged-aluminum, 7-spoke wheels slash another 5.3 lbs. Dry weight is claimed at just 372 lbs. (with Race ABS), which singles out the HP4 as the lightest four-cylinder literbike ever, according to BMW. The big news here, however, is the suspension. 

The HP4 debuts BMW’s revolutionary Dynamic Damping Control (DDC) active suspension system, making it the first production motorcycle to automatically alter its damping characteristics in direct response to changing riding conditions. Electronically actuated valving that instantly and constantly adjusts compression and rebound damping should result in theoretically perfect suspension action at all times, capable of absorbing big hits without compromising small-bump compliance or high-speed stability.

 2013 BMW S1000RR HP4
 2013 BMW S1000RR HP4
2013 BMW S1000RR HP4 Wallpapers