Wheels Manufacturing Bottom Bracket Gauge Stack-21mm Replacement guide for an MRP

Replacement guide for an MRP G2 lower pulley

or Xtreme-Pro

}Magura QM 45 Disc Brake Adapter - 180mm-220mm Rotor (Front) or 140mm-180mm Rotor (Rear)

8 ISO Width (mm) 71 ISO Diameter 584 / 650b / 27

}Surly Straggler Bike - 650b Steel Chlorine Dream 46cm

Wheels Manufacturing Bottom Bracket Gauge Stack-21mm Replacement guide for an MRPWheels Manufacturing Bottom Bracket Gauge. 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