From the company that have best 1000 cc HP4 platform and invented the ADV bike with its original GS comes BMW’s new S1000XR, which was shown back in November at the EICMA show. Put simply, the new 2015 BMW S1000XR is an ADV-look sport-tourer powered by a detuned version of the S1000RR’s potent inline-four. According to BMW, the engine in the new S1000XR puts out 160 hp and 83 pound-feet of torque, which peaks at 9,250 rpm.
For optimum tractability and smooth, shudder-free throttle response from as low as 2,000 rpm, the BMW engine has vastly revised valve timing and reshaped intake ports. It remains a substantially oversquare engine, with an 80mm bore and the same 49.7mm stroke common to all S1000 models. Inlet and exhaust valves have come down in size by 2mm, and the engine breathes through 48mm throttle bodies. A high-compression ratio of 12:1 means that premium gasoline(petrol), with a Research Octane Number of 95, is required.
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