The size customization of road bicycle dental disc usually includes the following aspects:

1. Combination of teeth:

- Common combinations of teeth:

-53-39T: This combination is suitable for power drivers and international professional or high-level amateur racing scenes, can provide a large tooth ratio, in the pursuit of speed has an advantage.

-50-34T: It is more suitable for climbing, suitable for riders with weak leg strength or who often ride steep hills, and can provide a relatively easy stepping feeling when climbing hills.

-40-50T: Suitable for beginners or amateurs, it provides more tooth ratio choices, which can adapt to different riding conditions and speed needs, making riding easier.

-44-52T: Suitable for speed drivers, it can help achieve higher speeds on flat roads.

- Customized tooth number selection: In addition to the common combinations mentioned above, other tooth number combinations can be customized according to the special needs of individuals. For example, for people who often ride on a specific slope or road conditions, you can customize a tooth tray with a larger or smaller number of teeth to meet your own riding needs.

2. Crank length:

- Common crank lengths are 165mm, 170mm, 172.5mm, 175mm, etc. Different crank lengths are suitable for people of different heights, leg lengths and riding positions. For example, a smaller rider may be better suited to a shorter crank length, while a taller rider may need a longer crank length to guarantee ride comfort and efficiency. When customizing, you can choose the right crank length according to your body data and riding habits.

3. BCD (Bolt Circle Diameter) :

- Common BCD specifications are 110BCD, 130BCD, 144BCD, etc. Different BCD specifications determine the arrangement and position of the screw holes on the dental disk, and also affect the compatibility of the dental disk with the crank and the matching of the chain. When customizing the dental disc, you need to choose the right BCD according to the specifications of your bicycle frame and drivetrain.

It should be noted that the customization of the dental disc needs to take into account the overall compatibility and safety of the bicycle, and it is recommended that it be carried out under the guidance of professionals.