Bike Forums - Converting to a 10sp dura ace

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I would like to put 10sp components on my bike. What all do you ahve to chang over. Cassette, crank?, shifters?, chain? Any info on this project would be handy. Thanks

I currently have ultegra 9sp group set.

Quote:

Originally Posted by malibulsv

I would like to put 10sp components on my bike. What all do you ahve to chang over. Cassette, crank?, shifters?, chain? Any info on this project would be handy. Thanks

It depends on what components you currently have -- assuming you currently have D/A 9 speed, the minimum you need to change are:

1. STI brake levers
2. cassette
3. Chain

The 10 speed cassette will fit the 9 speed D/A hub.

If your rear derailer is a little worn, it would also be a good idea to replace it as well.

Clint

Shimano designed the new Dura-Ace groupset to work best as a complete unit. You can get away with just the 10 speed cassette and 10 speed shifter and a compatible chain. If you plan on changing the crank, you may need to get the BB shell reamed and faced at an LBS. You'll need a 1mm spacer to put the 10 speed cassette on an 8/9 speed freehub.