Before installing your cranks, be sure to face and chase your BB shell. This step is vital to ensuring a trouble free install and long bottom bracket life

Use our bottom bracket (BB) install instructions to install the BB required by your frame

For all of our cranks we offer BBs to fit frames with BSA threaded, BB30, PF30 and BB86/92 shells

If you are unsure which BB you need for your frame, check with your local shop or the frame manufacturer to see which standard their BB shell is designed around

With the BB already installed, start by greasing the crank spindle and polygon interface

Slide the driveside arm and spindle assembly through the BB. Do not use a hammer as this may damage the bearings

Check to be sure the driveside arm is bottomed out on the BB

Check the polygon interface to see how far it is protruding from the BB

You should see nearly 100% of the P3 interface protruding from the BB, if this is not the case either your BB shell is oversized or the BB may have been installed improperly. Stop install, measure BB shell width and refer to BB install instructions

Carbon cranks will show ~1cm of exposed spindle

Install the APS adjuster if not already installed

lightly grease and install the spring

Be sure the spring tang is facing out from the arm

lightly grease the APS adjuster

thread the APS adjuster together and install on top of the spring

notches on the outer ring should press up against the spring

the cup portion of the inner ring should fit over the arm

Before installing the arm turn the out ring of the APS adjuster such that the adjuster is in its flattest position

Grease the polygon interface inside the non-drive arm

Install the non-drive arm using a 8mm hex wrench

Torque the non-drive arm to 40-48nm

Adjust bearing preload by turning the APS adjuster counter-clockwise

note how the inner portion of the adjuster moves and closes the gap between the adjuster and the bearing

Hand tighten the APS adjuster until no side to side play is felt in the spindle

This can be double checked by squeezing the non-drive arm against the bikes chainstay