Originally Posted by BlastRadius

- Take apart your 12-25 cassette
- Find an 11-32 LX MTB cassette
- Use the lockring, 11t, and 28t cogs to replace
the lockring, 12t, and 14t on the 12-25.
- Now you have an 11-28, 11,13,15,17,19,21,23,25,28.

I'm using this cassette with a 50/36 and it allows me to stay in the big ring for 90%+ of my regular 40mile, 3000 vertical feet ride. The 50/13,15,17,19 combos are what I'm using the majority of the time but I can go to the 21 and 23 from the big ring without a problem. Using the 50/36 gives me less of a drastic change in gear inches when going between big and small rings.