Exquisite workmanship:This bicycle bottom bracket has a good quality,strong durability, smooth trampling, no sound, long service life.

Seal structure:Seal the central shaft to prevent dirt and water from polluting the interior.

Accurate installation:This bike parts the installation is simple, a person can also easily install.

BB52 Size:Fit for frame five-way width 68/73mm(freely adjusted through three 2.5mm thick washers). Suitable for the tooth disc axial diameter of 24mm.

Bearing lubricating grease:Lubrication effect is good, waterproof strong is not easy to deteriorate.

Both in terms of sealing, smoothness and durability are more than the traditional shaft.

Installation method

First: Identify the middle shaft left (L) right (R)

Second: Position on the right side and tighten clockwise

Third: Place on the left side and tighten clockwise

Fourth: Use professional tools