Everyone will have to choose the gearing on their XR650R that works best for them and their riding locations, conditions, and style. Here are the final gear ratios produced by each sprocket combination to help you decide what to try next.

Front Sprocket / Rear Sprocket | Gear Ratio

13/46 | 3.538:1
14/46 | 3.285:1
15/46 | 3.06:1
16/46 | 2.875:1

13/47 | 3.615:1
14/47 | 3.357:1
15/47 | 3.133:1 (popular for distance riding, lower RPMs/better mileage)
16/47 | 2.937:1

13/48 | 3.692:1
14/48 | 3.428:1 (Stock gearing)
15/48 | 3.2:1 (popular all around choice)