What is a good gear ratio to run on a '06 gsxr 1000 to get alittle more torque? Just looking to add to bottom ut not take to much from top!!!!!

Go to a 16T front sprocket.

Or a +2 (44) on the rear sprocket. Asked and answered... /thread

street down 1 or up 2
track down 1 and up 3

gear ratio has nothing to do with engine power characteristics. by that i mean the gearing change such as dropping a tooth off the front will add torque multiplication at all rpms i recommend -1 on front for the street should only add about 500rpm from what you at now for a given speed in 6th gear