Be aware that the cable pull ratio for the front derailleur is different between the road and mountain groups. Make sure the shifters you choose are made for a mountain (tourney, alivio, acera, deore) derailleur. Otherwise you could get really crummy front shifting. Those A050's say they're for "road bikes" but the reviews on Amazon.com imply that people have used them successfully on mountain bike conversions. Worst case you may end up buying a new A050 front derailleur, though.