Gear Ratio Chart
If your sprocket sizes are not listed take the number of teeth on rear and divide by number of teeth on front
Front Sprocket
| 11 | 12 | 13 | 14 | 15 | 16 | 17 | |||
| 24 | 2.18 | 2.00 | 1.85 | 1.71 | 1.60 | 1.50 | 1.41 | ||
| R | 25 | 2.27 | 2.08 | 1.92 | 1.79 | 1.67 | 1.56 | 1.47 | |
| E | 26 | 2.36 | 2.17 | 2.00 | 1.86 | 1.73 | 1.63 | 1.53 | |
| A | 27 | 2.45 | 2.25 | 2.08 | 1.93 | 1.80 | 1.69 | 1.59 | |
| R | 28 | 2.55 | 2.33 | 2.15 | 2.00 | 1.87 | 1.75 | 1.65 | |
| 29 | 2.64 | 2.42 | 2.23 | 2.07 | 1.93 | 1.81 | 1.71 | ||
| S | 30 | 2.73 | 2.50 | 2.31 | 2.14 | 2.00 | 1.88 | 1.76 | |
| P | 31 | 2.82 | 2.58 | 2.38 | 2.21 | 2.07 | 1.94 | 1.82 | |
| R | 32 | 2.91 | 2.67 | 2.46 | 2.29 | 2.13 | 2.00 | 1.88 | |
| O | 33 | 3.00 | 2.75 | 2.54 | 2.36 | 2.20 | 2.06 | 1.94 | |
| C | 34 | 3.09 | 2.83 | 2.62 | 2.43 | 2.27 | 2.13 | 2.00 | |
| K | 35 | 3.18 | 2.92 | 2.69 | 2.50 | 2.33 | 2.19 | 2.06 | |
| E | 36 | 3.27 | 3.00 | 2.77 | 2.57 | 2.40 | 2.25 | 2.12 | |
| T | 37 | 3.36 | 3.08 | 2.85 | 2.64 | 2.47 | 2.31 | 2.18 | |
| 38 | 3.45 | 3.17 | 2.92 | 2.71 | 2.53 | 2.38 | 2.24 | ||
| 39 | 3.55 | 3.25 | 3.00 | 2.79 | 2.60 | 2.44 | 2.29 | ||
| 40 | 3.64 | 3.33 | 3.08 | 2.86 | 2.67 | 2.50 | 2.35 | ||
| 41 | 3.73 | 3.42 | 3.15 | 2.93 | 2.73 | 2.56 | 2.41 | ||
| 42 | 3.82 | 3.50 | 3.23 | 3.00 | 2.80 | 2.63 | 2.47 | ||
| 43 | 3.91 | 3.58 | 3.31 | 3.07 | 2.87 | 2.69 | 2.53 | ||
| 44 | 4.00 | 3.67 | 3.38 | 3.14 | 2.93 | 2.75 | 2.59 | ||
| 45 | 4.09 | 3.75 | 3.46 | 3.21 | 3.00 | 2.81 | 2.65 | ||
| 46 | 4.18 | 3.83 | 3.54 | 3.29 | 3.07 | 2.88 | 2.71 | ||
| 47 | 4.27 | 3.92 | 3.62 | 3.36 | 3.13 | 2.94 | 2.76 | ||
| 48 | 4.36 | 4.00 | 3.69 | 3.43 | 3.20 | 3.00 | 2.82 | ||
| 49 | 4.45 | 4.08 | 3.77 | 3.50 | 3.27 | 3.06 | 2.88 | ||
| 11 | 12 | 13 | 14 | 15 | 16 | 17 |