Headset Bearings

dee4life2005 Posts: 773
edited May 2013 in Workshop
I have a BeOne Diablo Race 2012 that requires replacement headset bearings, but as I've never had to replace the headset bearings before I'm unsure exactly what it is I need. The BeOne carbon frames, with tapered steerers, seem to use 1.1/8" for the upper bearing and 1.1/2 for the lower bearing.

The headset itself is an FSA ACB - and the washer under the cap has "MS073-1 1/8" on it.

Anyone any idea what I need and where's best to get it.

I would normally just take my bike / bearings to the LBS and get them to take a look, but I can't get down there until next week and I have a big ride planned for this weekend.