Brand New 2015 BMW S1000RR
BMW has updated the cylinder head and intake system, ultimately growing peak power figures by 6 horsepower and increasing torque figures near 5000 rpm. Specific changes include reshaped intake and exhaust ports, a new cam shape for the intake camshaft, plus lighter intake valves and intake valve springs. The velocity stacks were shortened (the variable length system remains), which in combination with the aforementioned changes, improves the engine’s ability to get the exhaust gases out of the cylinder and the fresh air/fuel mix in. Moreover, the servo motor acting on BMW’s ride-by-wire throttle valves was made smaller, which enabled engineers to grow the airbox and go to a fully symmetric design for optimized power output.
Spent gases exit a newly shaped exhaust with twin-pipe design and no under-engine canister, updates which combine to lower back-pressure and increase torque at medium revs. The exhaust looks better in person than it does in pictures, and contributes to a massive 6.6 pound decrease in overall weight. Like any other BMW S 1000 RR exhaust, the system has a bark that dwarfs the exhaust note of any other OE exhaust system. And need we mention again its 6.6 pounds lighter
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etail price of $13,800
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