Frame Up Bikes at 181 Mayhew Way D, Pleasant Hill, California.

What I love about this bike shop is how knowledgeable they are about not only the bikes they sell, but repair as well. Now, granted repairing a bicycle isn't like open heat surgery, but I've been to a number of places where bike techs don't adjust my bike so it rides better than when I brought it in. If you're looking for bargains, none will be found here. But if you are in the market for high-end bikes (both road and dirt), this place is very good and the staff is super cool.