Description
ZTTO BSA Bottom Bracket
For 68mm Frame Shell
weight:about 316g
Size: 68 X103/107/110.5/113/116/118
/120/122.5/124.5/127.5
mm
cups thread size and pitch: 34.798mm 1.37 x 24TPI
Structure: 2 Bearings
Feature
Long service time
The bottom bracket is solid and durable with a long service time.
Steel Material
The steel shell can absorb roundness tolerance for installing ports of Bracket Bottom.
Perfect
Integrated System
Integrated System can protect the frame, more power output, it's better than ordinary structure bottom bracket.