1926 disc bottom products are offered for sale by suppliers on Alibaba.com, of which bicycle crank & chainwheel accounts for 4%, other bicycle parts accounts for 1%, and bicycle brake accounts for 1%.
A wide variety of disc bottom options are available to you, such as mountain bike, road bike and bmx.You can also choose from steel, aluminum and silicone disc bottom,As well as from alloy, aluminum alloy disc bottom, and whether disc bottom is black, silver, or green.