White Industries MR30 Adjustable Ring - Black

These are also called "Bearing Preload Collars" and are part of the non-drive side/left crank arm assembly on the White Industries M/A/R/G 30 cranks. The collar threads on to the crank arm and adjusts the bearing preload off the bottom bracket. Make sure the collar is threaded all the way onto the crank arm before installing the arm onto the spindle, otherwise you may damage your bottom bracket bearings and/or crack the collar.

- M2-.4 x 8mm socket head cap screw
- 1.5mm hex key required, not included
- For bottom bracket bearing adjustment, adjust collar to remove side to side play, then back off 1/8th of a turn
- Pinch bolt torque: 1/4 turn past snug (more may crack the collar)