Cassette Recomendations for LP IM

I'd say 12-27.... you have the same high gear and 2 more teeth on the low end if you need them. I just climbed 12000 ft in a very difficult century and I practiced on a 39-25.... OUCH. For the actual ride I had a compact 50-34 and a 12-27.

This may not be comparing apples to apples but I'd get a 12-27 in a heartbeat...... and maybe a compact crank.

Got my new Ultegra cassette @ probikekit for $ 42 shipped, but I think price has gone up a lot.

Good luck !

A different cassette is not going to stop you from getting dropped on hills.  That's simply power-to-weight.  If your cadence was uncomfortably low while climbing at your deired effort level, then more gears might be useful.

FWIW, I did LP with a 34/50 compact and a 12-25 cassette.

What he said ^^^.  If you are struggling with the 25 to maintain any sort of reasonable cadence, then a 27 might be in order.

I used an 11-23 with a 53/39.  But everyone is different.

i am a BOP cyclist.  i am using a compact and 12x27.

i like rule #7!!!  and the first 6 are???

i know for me one of them is 'drop a gear dumba$$'. 

Thanks for the insight! I am going to my local bike shop tomorrow to buy a new cassette.