Originally Posted by notwist

Does anyone have experience with the SRAM WiFli rear derailleurs? My bike currently has 2011(?) SRAM Force. Would I need to replace anything else other than the derailleur itself?

I'm planning on doing Catkills (and some other hilly RRs) and was thinking buying a long cage derailleur and 11-32 cassette might be easier/cheaper than buying a completely new crank. Plus, i'd like to have the power numbers from my Quarq to look at. It's a 130bcd so my chainring options are limited.