• High intensity PVC shell, prevents cracking and not easy to fracture
• High performance chip provides quick response speed and stable transmission performance
• Effectively protect your electric bike from chain grinding and cassette breaking
• Help to detect the action of shifting gear very quickly and shut off the power
• Compatible with hydraulic and mechanical brakes, fits for rear derailleurs and internal gear hubs
• Replacement for Bafang BBS01 BBS02 BBS03 BBSHD Mid Drive Motor

Specification:

• Material: Plastic 
• Standard: USB2.0
• Length: 58cm / 22.8in 
• Weight: 20g / 0.7oz