Quote:
Originally Posted by shovelhd
I say don't waste your money. Spend it on training. Nats is an animal.
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I'm inclined to agree. for one, because I have several GXP BB's and I've tried the CK version. it sucks. pretty sure it steals watts, actually. and secondly, because I've got a friend who's nerdy enough to have tracked down any and all data on this subject just this past year (even paying for some of it) and decided that it wasn't worth it. you're talking a few watts gained, maybe. unless you're at the very very tippy top of the sport, in the best shape you'll ever be in, you've got a lot more to gain by training.
at the price that ceramic bearings go for, and you want to replace 'em everywhere on your bike... I'd say you could even spend a week training at altitude with the money.
p.s. wasn't clear from your post but if you're talking about cross nationals, please tell me you're joking with this ceramic bearing talk... one bike length into a mud pit and all your low-friction watts saved are gone.