ZTTO BB386 Aluminum Alloy + Ceramic Bicycle Bottom Bracket (Outer Diameter: 46mm, Inner Diameter: 24mm)

• Each of our bottom bracket is manufactured for best performance and longest durability
• Matching top quality components and know-how, we make sure that every bottom bracket empowers every rider with opportunities to save energy or ride faster
• The special design of the threaded bottom bracket, where the cups are threaded and screwed together inside the frame, ensure that you avoid any creaking sounds 

Specifications:

• Model: BB386
• Material: aluminum alloy + ceramic
• Suitable for frame bottom bracket inner diameter: 46mm, bottom bracket width: 86.5mm