does anyone know what is the size of the front master cylinder on gs? it is my experience with many bikes that they come stock with too big MC causing wooden feel in brakes. I changed MC in all my bikes, usually to one number smaller. I believe that the MC in this bike is 12.8mm or even 14mm. there is a way to calculate the MC/calliper-pistons ratio to find the right set up. Smaller MC allows more braking power with less force required. If the MC is far too small however, it will cause the brake lever travel too far.