These derailleurs start out at around 160g, but with a bit of creative whittling and some alu bolts you can drop the weight down to around 130g:

This compares favourably to the weight of an XTR front derailleur but at a fraction of the cost
.
These derailleurs start out at around 160g, but with a bit of creative whittling and some alu bolts you can drop the weight down to around 130g:
This compares favourably to the weight of an XTR front derailleur but at a fraction of the cost
.