[Db71]

This is on a 2000 rsvr I pulled my front sprocket cover to count teeth.the front is 16 and the rear is 43. My question is; is this stock and if not then what is. Also with the front sprocket off and the bike in gear if I turn the output shaft counter clockwise and mark it at the 12 0'clock spot I can turn the shaft clockwise to the 1 0'clock position. Is that too much slack in the gears? Seems excessive. What is normal? Thanks