Sram pedal boats adopt two standards, the BB 30 and the GXP. It is the latter that we propose to set up on a bicycle.
To mount a Sram GXP crankset, it is enough to have an 8 mm Allen wrench, grease and a mallet.
Pictures © Frédéric Iehl
Time and difficulty
Nothing very complicated for setting up a Sram GXP crankset, it just takes a little grip and method. There is therefore an average difficulty. In a quarter of an hour, the operation should be carried out.
The crankset axis is coated with grease. For a perfect assembly it is essential.
Don’t neglect grease ! It allows you to plate the crankset well into the bearings. Without it, the tightening will be good, but there will be a significant risk of play. Game that we will not be able to adjust by tightening the crank screw more… With grease, everything fits perfectly!
We put the axis in the right bowl.
The Sram GXP axis is 24 mm on the right side, and 22.2 mm on the left side. Therefore, you cannot mount a Sram pedalboard on 24 mm « standard » bowls. Or you need an adapter. We will not be able to use the Sram bowls for another brand of pedals.
The crankset is well put by hand against the bowl.
There is no detromp on the GXP axis. We therefore pay attention to the alignment of the cranks.
We tighten the crankset tightly.
We hit with the mallet at the axis. Just once.
We eventually tighten the left crank. Sometimes it’s necessary, other times it’s not…