Bottom Bracket Gauge

Product code: MBBGAUGE

The Bottom Bracket Gauge Tool was designed to provide all the necessary measurements to identify the proper bottom bracket for a specific bike configuration. The gauge can measure:

  • bottom bracket width
  • bottom bracket shell inner diameter
  • crank spindle length
  • crank spindle diameter
  • bearing inner diameter

A metric scale runs along the long edges for measuring bottom bracket shell width and crank spindle lengths. Durable red anodized aluminum with laser etching. 

We took the guess work out of finding a bottom bracket. Get all your measurements with the Bottom Bracket Gauge and then call us or visit our website and find the bottom bracket you need.


Gauges for the following crank spindle diameters:

  • 22mm
  • 24mm
  • 29mm
  • 30mm

Gauges for the following bearing inner diameters:

  • 22mm
  • 24mm
  • 29mm
  • 30mm

Gauges for the following bottom bracket shell inner diameters:

  • 37mm
  • 41mm
  • 42mm
  • 46mm

Ruler to measure bottom bracket shell width up to 132mm:

  • 61mm
  • 68mm
  • 73mm
  • 79mm
  • 86.5mm
  • 90mm
  • 92mm
  • 95mm
  • 100mm
  • 120mm
  • 132mm

Ruler to measure crank spindle length up to 180mm