Same thing on the current F-800 and F-900: identical engine blocks, different power outputs, F-900 comes with taller suspension, spoked wheels, and so forth. I

Same thing on the current F-800 and F-900: identical engine blocks, different power outputs, F-900 comes with taller suspension, spoked wheels, and so forth. I believe part of the rationale is that Euro A2 licenses permit a "restrictor kit" to reduce motor power below 47 hp, but only if maximum horsepower is less than 94 hp (double the limit). One can buy an F-800 with a restrictor, and then remove the restrictor once one has obtained the upgraded license. Now, looking at the motor torque and power curves, most of that extra power comes in the high RPMs. In practical riding of BMW twins, I find that I rarely place the motor into the high RPMs, because the torque curve is nice and flat and there's plenty of pull in the low range :)