Originally Posted by bluehair
This is quite an expensive proposition for a nearly new bike. There is not much to be gained from 9 speed to 10 speed. But, that wasn't your question. Yes, you can make the conversion from 9 to 10 speed. You'll need new 10 speed shifters, 10 speed cassette, 10 speed rear derailleur, probably a new chain and new shifter cables. You will also need to buy the proper bike tools to do this upgarde. The front derailleur clamp diameter is specific to the seat tube diameter, assuming neither front derailleur is a braze-on, so you can only make the switch if the seat tube diameters are the same. On the up-side, now is a great time to buy mail order parts. The sales are great.
I agree with the above. This is quite expensive. The Rear Derailluer you have should work as the travel from start to finish is very close from the 9 speed to the 10 speed and the Indexed shifter controls the distance anyway but other than that you will need all of the above to do this.
Kenal0