Cars

The new BMW R 1250 RS

For decades, the boxer engine in the BMW Motorrad R, RS and GS Adventure models has stood for distinctive, powerful and reliable propulsion when it comes to dynamic riding along country roads, sporty touring or enjoying long-distance trips and motorcycling adventures to the full. For more than 25 years, BMW Motorrad has used 4-valve technology in this connection, combined with electronic fuel injection and closed-loop catalytic converter technology in order to achieve the best possible power and torque delivery, efficiency and environmental compatibility. Further advanced boxer engine with BMW ShiftCam Technology for an additional increase in power across the entire engine speed range, reduced emission and fuel consumption levels, optimised running smoothness and refinement. With the extensively further advanced boxer engine, the new R 1250 R, R 1250 GS and R 1250 GS Adventure not only achieve a whole new level of power and torque. It was also possible to significantly optimise refinement and running smoothness – especially within the lower engine speed range. What is more, the new engine offers improved emission and fuel consumption levels as well as a particularly satisfying sound. For this purpose, BMW ShiftCam Technology has been used for the first time in the serial production of BMW Motorrad engines: this enables variation of the valve timings and valve stroke on the intake side. In addition, the intake camshafts are designed for asynchronous opening of the two intake valves, resulting in enhanced swirl of the fresh, incoming mixture and therefore more effective combustion. Other technical changes to the engine relate to the camshaft drive – now taken care of by a toothed chain (previously a roller chain) – an optimised oil supply, twin-jet injection valves and a new exhaust system.

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