Changing the Front Derailleur Clamp?

Giovanni Francisca wants to know if it is possible to change the size of the clamp on his front derailleur as I guess he has a new frame with a larger diameter seat tube. This is not an impossible thing to change if you have a bolt on clamp, but not all are like this.

Question:
I was wondering if it is possible to change the clamps on a front derailleur to fit a bigger tube; from31.8mm – 34.9mm?

Hi Giovanni,

This is a tricky one! The answer is yes and no, it depends on which front derailleur you have? If your front gear changer has a built in clamp then it isn’t possible to change the clamp. If you have a separate clamp and a front derailleur that can fix to a frame bracket then you can buy a different sized clamp which clamps to the frame and then the front derailleur bolts to the clamp as if it was fixed to the frame.

R & F Mech

If you can change the clamp then go for an alloy one, there are some that are carbon look-alike, but tend to be slightly flexible and don’t give a great gear change. Front derailleurs are not too expensive so if you have to buy a new one it shouldn’t break the bank.

Bolt On F Mech with Clamp

Clamp