JMT114

Do the carbon braided rails on the Fizik Arione CX fit in a regular seat post? Are they the same diameter as a titanium rail saddle?

umd

They are pretty fat and don't fit in all posts. They are def. thicker than the ti rails. Note that they are taller but not wider, so they will fit in posts that have up/down clamps like Thomson, Ritchey, 3T, but not round clamps like the Specialized posts.

JMT114

Thanks, I think mine will work, (Bontrager) but I will definitely look before buying.

umd

If the clamp looks anything like this it won't work. I googled Bontrager seatposts and they all look just like the Specialized ones.



On the other hand if it looks like this you are probably fine

nitropowered

Ritchey 1-bolt seatposts need a new clamp to fit those rails. They offer two clamps, one for the fizik, and a different one for other carbon rails.

USE Alien posts also need a different clamp for those carbon rails.

If in doubt, email the manufacturer. I was told by Thomson that their clamps work for carbon rails, just be sure to disassemble it all the way first so you don't scratch the rails.

travkat

the rails are actually taller than they are wide (aka oval). I have the new Antares with these rails and it definitely needs a bit more space.

JMT114

Thanks for the replies. I think I'll probably opt for the saddle with titanium rails to be sure it will fit in my existing post.

I really don't feel like spending a lot of money on a new saddle and then having to spend more on a new post.