When choosing a new bar, be careful with the manufacturer's given measurements. After a fitting, it was recommended I get 42cm or "maybe" 44cm bars. I opted for 42, but the 42cm trek bars I bought are actually measured *center to center,* rather than outside to outside, meaning they actually ended up being pretty much 44cm wide. It's fine, I actually do have broad shoulders, but I think I really preferred the trek "40cm" bars because they were *actually* closer to 42cm in the first place.