Originally Posted by khuon
You've got it backwards. SRAM derailleurs are all 1:1 so thus are incompatible with Shimano shifters. You can use some SRAM shifters with Shimano derailleurs but there are no 2:1 SRAM derailleurs.
Whose got what backward's? There are Sram 2:1 rear der's they are very low end replacement der's for dept store bikes. Most people on here would not use them.