CG125 38T-15T "represents the sprocket combination suitable for CG125 motorcycles, as follows:
CG125： It is a classic 125cc displacement motorcycle launched by Honda, with many well-known models of similar styles produced in China. It is known for its practical and economical appearance, and was once a very common motorcycle model in China, especially in rural and urban-rural areas. It is an important tool for many people to travel and transport
38T - 15T： Representing the combination of teeth on the sprocket, 38T is the number of teeth on the rear sprocket, and 15T is the number of teeth on the front sprocket. The transmission ratio formed by this tooth number combination is 38 ÷ 15 ≈ 2.53. Compared to other gear combinations, this transmission ratio allows the vehicle to achieve a better balance between power and speed. When starting and accelerating at medium and low speeds, the vehicle has a certain power performance and can reach a suitable driving speed relative to the speed, meeting the needs of frequent starting and stopping on urban roads; At the same time, when driving on flat roads and highways, it can also maintain a relatively low engine speed, thereby reducing fuel consumption, and the stability of the vehicle is also good, suitable for long-distance cycling. For example, on urban roads, it can easily keep up with traffic flow; In the suburbs or on highways, it is also possible to drive at a higher speed while protecting a certain fuel economy
Click to view the motorcycle model parameter table：
| Chain type | number of teeth | ||
| 1 | Alpha | 420 | 36 |
| 2 | Alpha | 420 | 39 |
| 3 | Alpha | 420 | 41 |
| 4 | Alpha | 420 | 43 |
| 5 | Alpha | 420 | 46 |
| 6 | pit bike | 420 | 36 |
| 7 | pit bike | 420 | 39 |
| 8 | pit bike | 420 | 41 |
| 9 | pit bike | 420 | 43 |
| 10 | pit bike | 420 | 46 |
| 11 | pit bike | 428 | 36 |
| 12 | pit bike | 428 | 39 |
| 13 | pit bike | 428 | 41 |
| 14 | pit bike | 428 | 43 |
| 15 | pit bike | 428 | 46 |
| 16 | CG/CB | 520 | 36 |
| 17 | CG/CB | 520 | 39 |
| 18 | CG/CB | 520 | 41 |
| 19 | CG/CB | 520 | 43 |
| 20 | CG/CB | 520 | 46 |
| 21 | CG/CB | 520 | 49 |
| 22 | CG/CB | 525 | 39 |
| 23 | CG/CB | 525 | 41 |
| 24 | CG/CB | 525 | 43 |
| 25 | CG/CB | 530 | 39 |
| 26 | CG/CB | 530 | 41 |
| 27 | CG/CB | 530 | 43 |
| 28 | dirt bike | 520 | 36 |
| 29 | dirt bike | 520 | 39 |
| 30 | dirt bike | 520 | 41 |
| 31 | dirt bike | 520 | 43 |
| 32 | dirt bike | 520 | 46 |
| 33 | dirt bike | 520 | 49 |
| 34 | dirt bike | 525 | 41 |
| 35 | dirt bike | 530 | 41 |
| 36 | 139fmb | 420 | 13 |
| 37 | 139fmb | 420 | 14 |
| 38 | 139fmb | 420 | 15 |
| 39 | 139fmb | 420 | 16 |
| 40 | 139fmb | 420 | 17 |
| 41 | 139fmb | 428 | 13 |
| 42 | 139fmb | 428 | 14 |
| 43 | 139fmb | 428 | 15 |
| 44 | 139fmb | 428 | 16 |
| 45 | 139fmb | 428 | 17 |
| 46 | CG/CB | 428 | 13 |
| 47 | CG/CB | 428 | 14 |
| 48 | CG/CB | 428 | 15 |
| 49 | CG/CB | 428 | 16 |
| 50 | CG/CB | 428 | 17 |
| 51 | CG/CB | 428 | 18 |
| 52 | CG/CB | 428 | 19 |
| 53 | CG/CB | 520 | 12 |
| 54 | CG/CB | 520 | 13 |
| 55 | CG/CB | 520 | 14 |
| 56 | CG/CB | 520 | 15 |
| 57 | CG/CB | 520 | 16 |
| 58 | CG/CB | 520 | 17 |
| 59 | CG/CB | 520 | 18 |
| 60 | CG/CB | 520 | 19 |
| 61 | CG/CB | 520 | 13 |
| 62 | CG/CB | 525 | 14 |
| 63 | CG/CB | 525 | 16 |
| 64 | CG/CB | 525 | 18 |
| 65 | CG/CB | 530 | 13 |
| 66 | CG/CB | 530 | 14 |
| 67 | CG/CB | 530 | 16 |
| 68 | CG/CB | 530 | 18 |