BB bottom bracket integrated thread screw type mountain bike / road durable high strength practical bearing shaft parts
- The special design of the threaded bottom bracket, where the cups are threaded and screwed together within frame, ensures avoid any squeaking.
- Simple design, easy to install and operate, convenient to use.
- Professional manufacturing, stable characteristics and high reliability.
- Precision machining, with high quality assurance of comprehensive performance.
- Made of high quality alloy material, sturdy, durable and long service life.
