Hey guys. I plan on upgrading my current Shimano 2300 shifters, FSA crankset, BB, and Sora rear derailleur on my Masi cause I'm doing my first triathlon in about three weeks. I plan on upgrading to SRAM Red shifters, SRAM Red crankset, GXP BB, and SRAM Force rear derailleur. With this my bike drops 1.23 lbs to 18.77 lbs.
I've got a few questions regarding this setup. First off, if I replace both crankset and BB, does it matter if it is a BB30 or GXP? Secondly, how does the Doubletap work?
Thanks for any help you can give me.