CX Seatpost Recomendations? Light vs. Durable
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I snapped an easton carbon post (27.2) on a botched remount last year and switched to a thomson elite. In all likely hood, that post was previously overtightened by its previous owner, but it scared me away from carbon posts for cx. This year I'm on a new bike that takes a 31.6mm post. Its not exactly a weight weenie build, but I'd like to save the extra grams where ever I can.
I was thinking about running a KCNC post, 31.6 x 350mm comes in at a claimed 168 grams. thomson claims 193 grams for the same length masterpiece, but are either of these really durable enough for CX? My technique is much improved, but I still tend to come down on the saddle quite hard from time to time. I know plenty of people run carbon posts for cx, and I'm certainly open to it, but the durable options seem to be 3x the price or aren't significantly lighter.
I was thinking about running a KCNC post, 31.6 x 350mm comes in at a claimed 168 grams. thomson claims 193 grams for the same length masterpiece, but are either of these really durable enough for CX? My technique is much improved, but I still tend to come down on the saddle quite hard from time to time. I know plenty of people run carbon posts for cx, and I'm certainly open to it, but the durable options seem to be 3x the price or aren't significantly lighter.
Something like a Syntace P6 HiFlex or Niner RDO post are godsends on a CX bike. A carbon post designed with some flex and a good solid clamp. The Syntace post was a night and day difference from my Thomson for comfort and the ability to stay seated and put down the power over rough stuff. Money well spent and not an area worth saving weight in on a cross bike for me.
I didn't have luck with the KCNC Ti Pro Lite clamp (or others like it) on a cross bike. A heavy remount in the wrong spot can unweight one side of the clamp and it'll slip.
I didn't have luck with the KCNC Ti Pro Lite clamp (or others like it) on a cross bike. A heavy remount in the wrong spot can unweight one side of the clamp and it'll slip.
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I have the P6 Hiflex on my CX and it is really good. Paired with a Fizik Kurve the bike is really comfortable.
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mjduct is right. I haven't pulled the trigger yet but its either a thomson or one of the new flexy posts
ive the specialized cg-r with my bike and its pretty good.
since its single bolt if you tighten it to the recommended value, it will eventually move up or down during cx'ing which is a terrible design issue.
BUT - if you overtighten it by 2 or 3 nm it doesnt ever move anymore even on the biggest impacts. which is what i did. doesnt seem to damage it.
since its single bolt if you tighten it to the recommended value, it will eventually move up or down during cx'ing which is a terrible design issue.
BUT - if you overtighten it by 2 or 3 nm it doesnt ever move anymore even on the biggest impacts. which is what i did. doesnt seem to damage it.
What about the ENVE seatpost? They are lighter than Thomson, help to reduce some of the harshness, and my experience is they are super durable in both MTB and CX.
Firefly Ti Road Disc
Firefly Ti Gravel Disc
Rock Lobster Team Tig SL Disc
Santa Cruz Blur 2019
Gaulzetti Cabron Disc (Retired to the Kickr after an accident)
Firefly Ti Gravel Disc
Rock Lobster Team Tig SL Disc
Santa Cruz Blur 2019
Gaulzetti Cabron Disc (Retired to the Kickr after an accident)
I am going to second the suggestion for the Enve seatpost although it is a tad pricey by comparison and would also add that the single bolt clamp requires pretty high torque (9nm) and anything less will result in drastic changes to the saddle angle/position.
- Michael
"People should stop expecting normal from me... seriously, we all know it's never going to happen"
"People should stop expecting normal from me... seriously, we all know it's never going to happen"
- the_marsbar
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I would not use a single clamp bolt seatpost for CX.
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