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| Shimano Nexus 4-speed[1] | ||||||||
| Number of gear teeth | ||||||||
| Gear | Sun Gear 1 | Pinion to Sun 1 | Pinion to Ring 1 | Ring gear 1 | Path: 1=R to P, 2=Direct, 3=P to R | Gear Drive Ratio | Drive ratio as fraction | Ratio incre- ment |
| 1 | 0 | 0 | 19 | 78 | 2 | 1.000 | 1 | |
| 2 | 30 | 30 | 19 | 78 | 3 | 1.244 | 1 19/78 | 1.244 |
| 3 | 39 | 19 | 19 | 78 | 3 | 1.500 | 1 1/2 | 1.206 |
| 4 | 45 | 13 | 19 | 78 | 3 | 1.843 | 1 285/338 | 1.229 |