Originally Posted by
BigAura
... The derailleurs are both super sturdy, although exact replacements may be harder to find. Should the off-chance occur and they fail on the road other parts could be easily substituted.
...
Agree. Since the front shifter is friction, many front derailleurs will work without difficulty. And since the rear is used by both 8 and 9 speed systems, there are lots of perfectly adequate substitutes.