ZTTO Bicycle 80mm 100mm Square Tapered Bottom Bracket BSA 80x142 100x155 100x177 80 100 Axis

BSA SquareBottom Bracket-Quare Hole

For 80/100mm Frame Shell

weight:about 348g(80x142mm)  420g(100x155/177mm)

Size:

80x142mm

100x155mm

100x177mm

cups thread size and pitch: 34.798mm 1.37*24TPI

Structure: 2 Sealed Bearings

The bottom bracket is solid and durable with a long service time.

The steel shell can absorb roundness tolerance for installing ports of Bracket Bottom.

Integrated System can protect the frame, more power output, it's better than ordinary structure bottom bracket.

water and dust resistance.

Please choose the bottom bracket you need, and use BB tool to screw into frame for safety.

If you want customized services, please contact us.