asked by: a guest Can the Syntace P6 HIFLEX seatpost work with carbon railings (seat)?
anwered by: t.young The manufacturer specifies it working with standard rails, but you could use carbon rails at your own discretion/risk. As long as the rails are torqued properly and the rails themselves aren't oval and seat properly, it could work.
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This post is excellent! It turned a rigid aluminum MTB frame into a real pleasure to ride. For reference I weight 140lbs and have a 300mm distance from the seat tube top edge to the seat rails. The post flexes enough to take the edge off the rear-end without feeling mushy or anything. It has significantly improved the bike's ride-ability over harsh bumps. It really transformed the frame into a pleasure to use - and I ride hard and fast. By a pleasure I mean it allows the frame to perform like an aluminum frame (stiff and efficient) without being harsh. Much more like a higher-end frame than it was.