Chain and sprockets
Chain and sprocket sizes for each model, showing standard and alternative sprocket sizes. Chain size for all models is 520.
Sprocket sizes
| Model |
Front |
Alt. Front |
Rear |
Alt. Rear |
| CMT 310 Mk.1 |
12T |
11T |
40T |
38T, 39T, 41T, 42T |
| CMT 310 Mk.2 |
12T |
11T |
40T |
38T, 39T, 41T, 42T |
| CMT 250 Mk.2 |
12T |
11T |
40T |
38T, 39T, 41T, 42T |
| CMT 320 |
12T |
11T |
40T |
38T, 39T, 41T, 42T |
| CMT 250 Mk.3 |
12T |
11T |
40T |
38T, 39T, 41T, 42T |
| CMT 240 |
13T |
11T, 12T |
39T |
38T, 40T, 41T, 42T |
| CMT 350 |
13T |
11T, 12T |
39T |
38T, 40T, 41T |
| 240TA / 280TA mono. |
12T |
11T, 12T |
40T |
38T, 39T, 41T, 42T |
