Took my CBR600F4 for a spin Today and it just did'nt feel as fast as it was when I first bought it! Now I'm not getting complacent,far from it but I'm guessing that maybe what I want is more 'Torque' that only a litre bike can give. I'm sure there's lots of riders on here that have moved up to 1000s' from the 600s'. Any thoughts on the subject for a useful topic for us all to natter on for a while?