ZTTO Mountain Bike Square Hole Bearing Sealed Bottom Shaft 68 X103 / 107 / 110.5 / 113/116 And 68X118/120/122.5/124.5/127.5mm

Description

BSA Bottom Bracket-Quare Hole

For 68mm Frame Shell

weight:about 316g

Size: 68 X 103/107/110.5/113/116/118/120/122.5/124.5/127.5mm

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

Structure: 2 Sealed Bearings

Sealed bearings and high quality spindle make it last for years and it's maintenance free.

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.