关于公司
The light-weight, efficiently simple, interchangeable expanding gear system for bicycles. Patent No. 10,167,055 issued January 1, 2019! The system eliminates: Chain droppage due to changing between discrete chain-rings. Chain wear due to rubbing and friction of front derailleur. Chain stretch due to small to large gearing differences between front and rear gears. The system allows a…
US
未知
未验证公司
业务透明度
- 未验证公司信息
- 向他们的客户询问评论
- 没有回复负面评论