X0 and XX is literally identical otherXO wasn't any better with shifting consistency; it often needed resetting for no apparent reason. I could only guess why??? XX has been flawless for 9+ months.
To keep it short, the GX has 2 very well-known issues: pogo pins breaking (I didn't experience this) and play in the frame mount causing inconsistent and rough shifting. XO wasn't any better with shifting consistency; it often needed resetting for no apparent reason. I could only guess why??? XX has been flawless for 9+ months. I've read reviews on all sides so YMMV, but have you seen how Rob is running his bars/stem these days... do you really trust a guy that likes that setup!?!?!?!?![]()
Transmission / Shimano's XT or whatever is on the installed is the weak link on bikes at the moment.
The absolute weak point / achilles heal. Shifting is good until you take a tiny rock glance to the jockey wheel cage and then it'll throw a gear out slightly. You likely wont even notice that you've hit it - but Its ridiculously close to the ground. Its the worst part on the bike and I look forward to the day that its replaced for something better (a refined MGU ideally).
Regarding the difference between X0 and XX, you're looking at noticing nothing more than silver bling on the XX, a few grams of weight difference, the rotating jockey wheel for a twig, and a lot less in your wallet.
Its a classic good / better / best product lineup, but fundamentally theres such miniscule differences between XX and X0 derailiieuer that in 1000 blind tests you'd end up guesssing a 50/50 in which one is which. You'd never tell.
GX and XX / X0 have more fundamental build differences, but its still the same electronics that actually do the shifting.
Cage from X0 after men’s DH in Finale Ligure 2 weeks ago. €99 to replace just that cage.