MTB 11-speed cassettes with 40t large cog are pretty common these days, and I've found you don't even need an MTB RD to use them. The latest Ultegra GS R8000 RD will change across an 11-40 no problem with the B-screw most of the way in. Also, using the MTB cassettes has the advantage that you don't need a new hub with the longer 11-speed freehub body and more wheel dish to fit an 11-speed cassette - the large 11-speed cassettes fit on older 8/9/10-speed hubs because the large inner cog can overhang the freehub more to the inside without the RD hitting the spokes in bottom gear. I fitted one of these cassettes and a Sugino OX crank with 39-26 chainrings to my wife's road bike, which gives her gears from 93" down to 17". She spins up the hills and annoys a few of the big beefy blokes who are grunting up in their hero gearing...
YT video showing the Ultegra RD and 40t cassette: https://www.youtube.com/watch?v=roUXWvAN-9k. Nick -- You received this message because you are subscribed to the Google Groups "RBW Owners Bunch" group. To unsubscribe from this group and stop receiving emails from it, send an email to rbw-owners-bunch+unsubscr...@googlegroups.com. To post to this group, send email to rbw-owners-bunch@googlegroups.com. Visit this group at https://groups.google.com/group/rbw-owners-bunch. For more options, visit https://groups.google.com/d/optout.
