Groupset upgrade, what parts do I need?

broona

I put a thread up a few weeks ago regarding upgrading my Defy 4 to a better bike, and was almost unanimously told just to keep it and upgrade the groupset instead.

It's currently got an 8 speed 2300 setup on there, what parts do I need to change it to a 10 speed 105/Ultegra?

I'm assuming the following :-

Shifters
Front and rear derailleur
Cassette

Anything else I need please?

me-109

Chain

nwmlarge

fresh cables
possibly grip tape depending on how the shifters are mounted

how old is the current running gear? a new set of chain rings might not be a terrible idea

Mikey23

im in the same position with a defy 4 so any advice would be helpful

edhornby

one thing worth considering, by the time you have priced up the individual components, you may get close to the cost of the complete groupset.... a complete set wouldn't have any compatibility issues and you'd get everything, have a look at ribble, merlin and bikediscount.de