after nearly 10 000 miles I think it's time to say goodbye to the oem chain and sprockets, Im thinking of going -1 on the front and +1 or 2 on the rear. I confess I'm being a complete lazy arse and cant be bothered to go out into the garage and look, so could someone please tell me the standard sprocket sizes (2012 bike) and chain length Will I have to get a longer chain ? is it worth going 520 on a road only bike ? will I have to get the power commander remapped due to the changes in sprocket sizes thanks in advance
