I've owned a Specialised Diverge Sport full carbon bike for 24 months and the Future Shock has failed, grinding, sound & feels rough when in operation. Investigation with dealers, and online, it been reported that its recommended after 500hrs of use, the Furure Shock requires a full service, mine appears to be past that and requires a complete replacement, at a cost of £150. I wish I'd been told this at purchase, as I would had second thoughts. Having said this I have to acknowledge that this bike was before the issue of the failing Future Shock, the most comfortable bike I've owned.
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