Just found that myself. For context my M 5010 is 425, M Shuttle 445, and a M SB130 is now 460 (!!)... mediums.Too old to be posted. https://m.pinkbike.com/news/Yeti-SB-66-Tested-2013.html
Edit: Found it - 455
https://geometrygeeks.bike/bike/yeti-sb66-2012-2014/