I used to think the USE Sumo seat clamp was genius. A solid mount, creak free, that never moved or gave any trouble.
Having been lucky I spotted a cracked clamp on return from the Cairngorm loops, the lower section of the taper section on the Carbon Sumo had cracked and I could not adjust the seat without hammering it off, thats one failure. I went to swop the seatpost over with the Ally Sumo and on inspection found that had a cracked clamp also. This one had cracked at the seat rail interface.
Now I’m not impressed, either of these could have failed on a long ride, and USE havent replied to an email asking if this is normal wear and tear, or if a stronger part is available. Checking on Chain reaction there are replacement seat clamp kits, so I guess it is pretty common then. Seems I’ll just have to treat these as disposable parts; £18 service every two years,and a risk of failure, probably wont buy another one then.
Two clamps of seperate seat posts