Originally Posted by ch9862
I have Trek 520 w/road handlebars. If I were to change handlebars to straight, which shifters and brake levers could I use? I think the bike has 105 front and Deore LX rear derailers, plus Avid v-brakes.
Most integrated shifters/brake levers for mtb bikes (like the current LX) have brake-lever pull for V-brakes (which require the lever to pull a lot more cable). You could switch to V-brakes, or find a Shimano brake/shift lever that is designed for cantilevers. If you get a shimano shifter for the proper number of speeds (8 or 9 on your bike, probably), it'll work fine. You could go with grip-shifters alternately, and having a seperate shifter would allow you to purchase brake levers specific to cantilever brakes.
However, if you're using the bike for long rides and/or touring, I would also recommend against the flat bar. If you want a more upright position, you you could get a higher stem with your current handlebars. Or, alternately, get moustache bars. Rivendell sells some good ones:
Moustache bars offer a wide variety of hand positions, work with your current brake levers and bar-end shifters, and look pretty cool to boot. I've got them on my commuter
and like them. You'd probably want to buy a stem 2cm shorter than your current one.