I'm running the stock sprockets on my 04 zx10r. Now are the stock numbers 17 on the front and 40 on the back? Correct me if im wrong. I'm looking to go through possibly vortex to upgrade these parts. I'm prob going to stay with the 525 chain but I need a little help choosing how many teeth I should run on the front and rear. If you guys could give me some advice to what I should run and give me a little info on what the effects will be on riding. I know if you increase the back teeth it will increase the torque but trying to figure the right combination with front. Thanks appreciate it.