Introduction of giant mountain bike

Except ATX series, you are talking about low-end cars. It is absolutely impossible for this kind of car to go out for exercise. If you go out for fitness, it is recommended to use 770-D or 740,740 to change the disc brakes directly, and 770-D has disc brakes directly. 770-D is 2200 or 2400 here, 740 is 1800, and it costs more than 400 yuan to change the disc brake. If you have more money, go directly to 790,790. We need more than 3000 here. The configuration of the assembling car is relatively high, but it is not recommended to assemble without a budget of more than 3,000 yuan.

ATX6XX cars are not recommended, both in configuration and appearance are not as good as 7XX.

The transmission systems of these cars are all Japanese parts. If you don't like Japanese goods, please assemble them. ATX7 frame +SRAM X5 transmission system +SRAM9-speed flywheel +AVID BB5 mechanical disc brake +RST front fork+nine fish drum+rim. Pick any MAVIC, but the price is not low. Other common parts of the toothed plate can be removed by a car like Giant, about 2000 ~ 3000.

Personally, I think the parts of SRAM (especially the pads) are much better in appearance than those of Shimano in Japan, with good performance and cheap price.