Hello, Bike: 2009 Ninja 650R stock gearing is: 15T / 46T I'm keeping the 15T front on for now, but what rear would be ideal? Go +2 bigger in the rear, 48T?
Hello David I dont have the answer for you but I have some mor info so you can make your decision With std sprockets Grattan has: 7 2nd gear turns 4 3rd gear - 4,9,11,12 1 1st gear - turn 10 1 Long straight. 5th gearish
David, Definitely try to 48. A lot of bikes with stock gearing will not pull redline in top gear anyway so you might actually gain top speed. I think they might be geared that way so at 60 mph they have lower RPMs emitting less engine noise to meet noise requirements. After that don’t worry about it and just ride. I see lots of guys spending money on go fast items when they would benefit more from more seat time. Steve