Internal Gear Hub Ratio Chart
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Hub-Gear Ratio Table
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Make & ModelRange1st2nd3rd4th5th6th7th8th9th10th11th12th13th14th
3
4
5
Bendx 2-speed Automatic Red or Yellow Band149%0.671
6
2740
7
8
Bendx 2-speed Automatic Blue Band150%11.5
9
4060
10
11
Sram/Sachs 2-speed136%11.36
12
4054
13
14
Sturmey-Archer 2-speed138%11.38
15
4055
16
17
Sturmey-Archer FM169%0.670.8911.13
18
27364045
19
20
Sturmey-Archer AW & Old Shimano 3-speed177%0.7511.33Minimum Sprocket Ratio = 2.00
21
304053
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23
Shimano Inter-4184%11.241.51.84
24
40506074
25
26
Sram/Sachs 3-speed Dual Drive & T3, Shimano Inter-3186%0.7311.36Minimum Sprocket Ratio = 2.00
27
294054
28
29
Sturmey-Archer FW190%0.670.7911.27
30
27324051
31
32
Shimano Nexus Inter-5206%0.751.0011.1591.3351.545Minimum Sprocket Ratio = 1.43
33
3040465362
34
35
Sturmey-Archer X-RD5225%0.670.7911.271.5Minimum Sprocket Ratio = 2.00
36
2732405160
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Sram P5 (or Sparc)251%0.630.7811.281.58Minimum Sprocket Ratio = 1.80
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2531405163
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40
Sram P5 Cargo224%0.670.7811.281.5Minimum Sprocket Ratio = 1.80
41
2731405160
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43
Strumey-Archer X-RD5(w)256%0.6250.7511.331.6Minimum Sprocket Ratio = 2.00
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2530405364
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46
Shimano Inter-7244%0.630.740.840.991.151.341.55Minimum Sprocket Ratio = 2.00
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25303440465462
48
49
Sturmey-Archer 7278%0.60.690.811.241.451.68
50
24283240505867
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52
Sachs Super-7284%0.590.670.811.241.481.69
53
24273240505968
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55
Sram Spectro S7303%0.570.670.811.241.481.74Minimum Sprocket Ratio = 1.83
56
23273240505970
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58
SRAM G8260%0.6090.710.8030.9031.0541.2041.3551.581Minimum Sprocket Ratio = 1.9 (2.0 with Coaster Brake)
59
2428323642485463
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61
Sturmey-Archer 8305%11.281.451.641.862.12.383.0520" and smaller wheels only
62
40515866748495122
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64
Shimano Nexus 8 or Alfine 8307%0.5270.6440.7480.85111.2231.4191.615Minimum Sprocket Ratio = 2.00
65
2126303440495765
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67
Strumey-Archer X-RD8(w)325%11.31.481.691.922.22.53.25
68
405259687788100130
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70
Sram i-Motion 9340%0.540.620.730.8511.171.381.611.84Minimum Sprocket Ratio = 1.73
71
222529344047556474
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73
NuVinci CVP 350%0.5infinite!1.75Minimum Sprocket Ratio = 2.00
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2070
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76
NuVinci N360360%0.5infinite!1.8Minimum Sprocket Ratio = 1.80
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2072
78
79
Shimano Alfine 11409%0.5270.6810.770.8780.9951.1341.2921.4621.6671.8882.153Minimum Sprocket Ratio = 1.80
80
2127313540455258677686
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82
Rohloff Speedhub 14526%0.280.320.360.410.460.530.60.680.780.8811.141.291.47Minimum Sprocket Ratio = 2.1 under 100kg
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1113141618212427313540465259Minimum Sprocket Ratio = 2.5 over 100kg
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85
86
Chainring484848484848484848484848484848484848
87
Cog242424242424242424242424242424242424
88
Wheel Diameter (inches)202020202020202020202020202020202020
89
Sprocket Ratio2.00
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