Originally Posted by
genejockey
The what, now?
(Says the guy who just built up a bike with 7410 DA with a 12-25, but really misses the 12-30 on a couple of his other bikes)
Needing more range out of that top level racing RD? Well, you can put on one of the company's MTB from the same era, or swap a cage onto your RD. Go to Velobase and look at the long cage RDs around your RD. In the case of the RD-7400, the 600 GS RD-6207 will work. Same RD with different finish and no indexing. As mentioned above, some other issues. Work around those and swap cages. Now you have a DA GS RD.