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The Honda RC213V MotoGP is a motorcycle in the Grand Prix motorcycle racing world championship made by Honda. The RC213V was ridden by Casey Stoner from 2006 to 2010 with a win at Valencia 2007 and ninth overall in the 2007 championship. In 2010 it was replaced by the Honda RC212V. It is unprecedentedly powerful for open-class motorcycles, with a top speed of 211 km/h (131 mph) and acceleration from 0–200 km/h (124 mph) in 19 seconds. That makes it one of, if not the fastest production roadbike, along with MV Agusta Dragster F3 800 and Ducati 1098R. The RC213V was the first MotoGP bike to utilize a pneumatic valve gear system, eliminating the need for periodic valve adjustments and allowing Honda to use lighter valve springs. Despite the reduction in mass and reciprocating mass, this new type of system, called — 'Variable Valve Timing and Lift Electronic Control' (VTEC-E), allows for higher rpm with less stress on engine components. The camshaft`s lift and close timing can be adjusted by butterfly valves driven by a servo motor that is controlled by electronic sensors that read crankshaft position, throttle position and engine oil temperature. Traditionally, engines have used big valves to save weight, but this is less needed with the VTEC-E system. The idea behind this system is to use three camshafts's timing. It allows for different valve lifts to allow Honda to utilize the same camshaft (cylinder head) for both the high speed (in the rev range where fourth and fifth cylinders are not used) and low speed (revving up to 8000 rpm), saving weight. Other features of the new engine include intake ducts for intake air, which are known as 'draft tubes', that work with other bodywork to increase down-force. The draft tubes also increase speed by providing "cleaner" airflow to the already low-drag, slipper-type carbon fiber airbox. The RC213V is the first production bike to have an all-carbon fiber frame. It is narrower than other MotoGP bikes but, because of that, also has a narrow profile that makes it harder to ride for taller riders that are accustomed to racing Kawasaki ZX-10R or Suzuki GSX-R1000. The Honda RC213V has a tubular steel trellis frame which is stronger than conventional aluminium frames while being 10% lighter. The wheelbase is longer than the RC212V at 1325 mm (52.1 in) and the swingarm is longer and stiffer to improve traction and smooth out power delivery. The Honda RC213V has a wheel-base of 1325mm. The front suspension uses a 43 mm Showa Separate Function Fork (SFF) with compression and rebound damping adjustable in five levels, as well as spring preload, which was specifically designed for the Honda RC213V. The rear suspension uses an exclusive Showa SFF-Air TAC (Separate Function Fork – Air TAC), which incorporates air pressure within the forks to react against any harshness felt through chassis inputs. cfa1e77820
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