10 speed / 9 speed gearing comparisons

10 speed MTB cassette ratios

At present there are 10 speed MTB cassettes available in 11-32, 11-34, 12-36 and 11-36 tooth ranges:

11-32T (SRAM)11121416182022252832
11-34T (Shimano)11131517192123263034
12-36T (SRAM)12131517192225283236
11-36T (Shimano/SRAM)11131517192124283236

Here's another way of looking at how the gear ratios on the 11-32, 11-34, 12-36 and 11-36 cassettes are distributed:

11-32T (SRAM) 1112 14 16 18 20 22 25 28 32
11-34T (Shimano) 11 13 15 17 19 21 23 26 30 34
12-36T (SRAM) 1213 15 17 19 22 25 28 32 36
11-36T (Shim/SRAM)11 13 15 17 19 21 24 28 32 36

9 speed MTB cassette ratios

Common 9 speed MTB cassette ratios are 11-32, 11-34 and 12-34. I've also included some wide-range 11-36 and 12-36 cassettes that have become available:

11-32111214161821242832
11-34111315172023263034
12-34121416182023263034
11-36111315182124283236
12-36121416182124283236

Here's another way of looking at how the gears are distributed:

11-321112 14 16 18 21 24 28 32
11-3411 13 15 17 20 23 26 30 34
12-34 12 14 16 1820 23 26 30 34
11-3611 13 15 18 21 24 28 3236
12-36 12 14 16 18 21 24 28 3236

9 speed / 10 speed comparisons

11-32T:

9-speed 11-32T 1112141618 21242832
10-speed 11-32T11121416182022252832

11-34T:

9-speed 11-34T 11131517 2023263034
10-speed 11-34T11131517192123263034

11-34T 9 speed / 11-36T 10 speed:

9-speed 11-34T 111315172023263034
10-speed 12-36T12131517192225283236

12-34T:

12-34T 9 speed / 12-36T 10 speed:

9-speed 12-34T 121416182023263034
10-speed 12-36T12131517192225283236

12-34T 9 speed / 11-34T 10 speed:

9-speed 12-34T 121416182023263034
10-speed 11-34T11131517192123263034

11-36T:

11-36T 9 speed / 11-36T 10 speed:

9-speed 11-36T 111315 18 2124283236
10-speed 11-36T11131517 192124283236

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