62 S. 15th St., South Side
412-390-3590 or www.thickbikes.com
Shopping here feels like stumbling around the basement of a well-organized bike geek. In fact, the recently renovated store offers a wide selection of used bikes for sale in its basement, in addition to new bikes and all the latest gear upstairs. And if you can't find that USB-charging, blinking LED light you crave, they will order it for you.
2nd: Iron City Bikes, Lawrenceville
3rd: West Liberty Bikes, Brookline