Shimano Pressfit BBs

Hey all,

The bottom bracket on my Giant Reign 1 2012 is disintegrating. The specs on Giant site does not specify what the BB is other than “Shimano Pressfit”.

How can I determine what the BB actually is? Is this fairly standard? I see BB71 and BB91.

Has anyone had any success swapping out a pressfit BB themselves?

Not sure off the top of my head, but I can find out. Unless Rally chimes in before I get the chance.

I’m going to have Rally take a look tomorrow.

Its getting pretty wobbly.

71 is MTB, and 91 is road, methinks. 24mm spindle.

Although today I saw both… Better to just Google it, I s’pose.