[ocd]

i live in central florida. pretty pancake flat, although this is the hilliest part of the state i have an ultegra drivetrain w a compact crank. i do have one dura ace 12-17, but they are kind of expensive. i really like having just the right gear w one tooth jumps. any ideas other than the dura ace? thanks in advance

 

[HeluvaSkier]

I think DA 7800 is your only Shimano option.

 

[wim]

Unless you have oversized seat stays, consider one of the Ultegra CS-6600 junior cassettes (like the 15-25) paired with the 56/44 (E-type) Dura-Ace crank. More teeth, less wear and tear.
http://techdocs.shimano.com/media/t.../CS/EV-CS-6600-2370_v1_m56577569830608752.pdf
But caution: don't use it with a triple or your bike may "fall over":
http://techdocs.shimano.com/media/t...I_1ZD0C/SI-0023A-13_v1_m56577569830658095.pdf

/w

 

[alexb618]

i dont think ultegra do a 12-21

i would love a straight block for crit racing but dura ace cassettes are just too expensive for what they are

 

[spookyload]

Central Florida is flat. On a 10 speed cassette you are only going to miss the 20t cog. Since it is so flat there, what difference does it make if you are riding with a 23t instead of a 20t? Also, why not look at getting a 11-21? Seems like it would work better with a compact crank.

 

[Becky]

There was a 9-speed Ultegra 12-21, but I don't think I've ever seen a 10-speed version.

 

[Salsa_Lover]

get a standard 53/39 with a 12-23