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Double to Triple/Triple to Double(5 posts)

Double to Triple/Triple to DoubleAztecs
Aug 18, 2001 9:31 AM
I have a Shimano 105 Double. What whould be the cost to turn it in to a triple (don't need one yet, but may when I start doing rides of 40+). What would be the cost if I had a Triple and wanted a double? Just curious.

re: Double to Triple/Triple to DoubleLone Gunman
Aug 18, 2001 11:18 AM
I see a triple ultegra upgrade kit in Colorado Cyclist for $460. Crank and BB, F/R Derail, STI levers and chain. Plus Labor.
re: Double to Triple/Triple to DoubleCliff Oates
Aug 18, 2001 11:35 AM
LG's reply would be the maximum cost scenario. If your STI levers are models ST-5500CA, ST-5500C (9 speed), or the ST-1055 with a triple compatible left shifter (8 speed), then you don't need new shifters. Otherwise, you can order just the left shifter through your LBS, although I have no idea what inventory availability is like. If you're careful about shifting, i.e.: never shift into the small-small combo, you don't even need a new rear der although it would probably be recommended. You would definitely need a new crankset, bottom bracket, front derailleur, and chain. Other things to consider are bottom bracket threading (most likely but not necessarily English) and spindle length, and braze-on or clamp front derailleur.

Cost? I don't know -- I'll let you play with that list of parts on your favorite web site and you'll have to factor in the cost of labor at your LBS.
re: Double to Triple/Triple to DoubleVictorChan
Aug 18, 2001 3:59 PM
Cost? The cost of the crankset. I think you should be able to use your current BB. If you are serious, I have a spare 105 triple year 2001. I can let you have it for cheap. I can take pictures of it too if you want. Unfortunately, my LBS didn't give me back the crankarm nuts when they were take it out to install the Dura Ace. I just replaced it with a double Dura Ace. You also need a triple front derrallieur. I am supposed to get one from Performance but haven't received one yet. I ordered it when I was still using the triple 105. Guess I don't need it now.
Aug 18, 2001 4:01 PM
I also have a triple rear derralleiur 105. This is the bike that I have:

I pretty much upgrade to an all out Dura Ace drivetrain.