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Differences between road & mtn. seatpost?(4 posts)

Differences between road & mtn. seatpost?pkompath
Nov 19, 2001 12:31 PM
Can they be interchangeable?
re: Differences between road & mtn. seatpost?TJeanloz
Nov 19, 2001 12:44 PM
Length, and durability are the only differences. MTB seatposts are longer and tend to be overbuilt. A MTB post can be used in a road bike, a road post should not be used in a MTB, because it is not designed for as much stress.

Some posts, like the Dura-Ace and XTR are exactly the same except in length.
length and weight.Sintesi
Nov 19, 2001 12:54 PM
You can interchange them fine its just that the mountain posts have a lot of unnecessary length on them for road bikes and a road post will be too short on the mtb. Some frames (both road and mountain) have unusual diameters (27.2 is standard)so pay attention to that. This can be easily determined, by the way, because it is usually engraved on the seat post somewhere. Also, since compact frames have become so popular lately some mtb posts may be suitable for you if you have that type of road frame.
re: Differences between road & mtn. seatpost?Woof the dog
Nov 19, 2001 11:08 PM
Thompson posts, for example, are the exact same ones for both road and mtn. with the minor exception of an extra length for the mtn. post. Hell, if you ride a sloping tube bike, you'd need the mtn. version. Thompson makes a very good quality seatpost.

Sincerely
Woof the dog.