Senior Member
Join Date: May 2009
Location: Brazil, Londrina PR
Posts: 273
Bikes: Kona Unit, Kona Kahuna, Kona Dew DL, Scott Big Jon, Trek Checkpoint ALR4, KHS Urban Soul, Haro Team Issue, GT Force Expert Carbon, Bernardi Quadra.
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Quoted: 31 Post(s)
The Ultegra RX rear mech can do more then what Shimano states, I've seen a few people running it as 2x11 with an 11-40 cassette.
I'm using an RX rd on my ALR4 with an SLX 11-36 10 speed cassette and the Tiagra 4700 bits that came with the bike. I switched to the RX rear mech to minimize chainslap on the local rockier dirt roads.