ok so i recently replaced my front and rear sprockets, I now have a 14 f 45 r. I researched the stock sprockets for my bike, because i figured that was the configuration that it was already in, well I was wrong. I dont remember what was on my bike before, i think maybe 17-18 in the front and around 48 in the rear, but now that i already installed the sprockets, my speedo isnt giving me the right speed that im driving at. I called a local suzuki dealer and asked where the speedo was on an 07 GSXR 750 and the person said it was based off the front tire spin. Can anyone confirm this? I did a little test run with a friend and she was driving at 55mph, i was somewhere around 75-80 on my speedometer. any help would be greatly appreciated.