Derailleurs

j_mcd

I'm replacing my rather poor 9 speed groupset on the Montague with some spare 10 speed 105 parts I've got lying around.

Now, the bit I don't have is a Derailleur (it got smashed to hell in an accident). I can easily still buy a 10 speed 105 one from pretty much anywhere but the 10 speed Tiagra (4601) is about a tenner cheaper.

I'd assume that they'd be compatible but does anyone know of any advantages of either?

Is the new Tiagra simply a re-branded old style 105 which means I should get it or is it still 'inferior' in someway to the old 105 kit?

prawny

10 speed tiagra will work, but max teeth at the back is 30. med cage 105 will do 34 I think.

I went 105 when I swapped mine for the choice, shifting is no better or worse.

edit - everywhere I look 5700 105 is the same price or cheaper than 4600 tiagra, new tiagra is cheaper but wont work.