What is a standard seatpost size?
27.2 mm
The most common size is 27.2 mm (1.07 in) for most bikes, especially for the higher-quality models. BMX bikes commonly use 25.4 seatposts. In some modern bikes with thicker alloy or carbon tubing, larger diameters such as 30.9 mm are used. Tapering seatposts often have a diameter of 22.2 mm (⅞ in) at the top.
What is the standard seatpost size for MTB?
27.2mm
While there are any number of post diameters out there, most modern road and MTB bike frames accept a seatpost of either 27.2mm in diameter (‘standard’), 30.9 or 31.6mm (‘oversize’).
What is the longest seatpost for MTB?
Rigid seatposts are the most common type of seatpost with no suspension or dropping capability. The seatpost diameter must match to the seat tube diamater of your frame.
Can you get a longer seat post for a bike?
You can adjust the seat post by making it higher (may require a longer seat post than you currently have). Also, some seat posts are straight, whereas others have a setback. The later will move the seat slightly further back on the bicycle.
What size seat clamp do I need for a 27.2 seatpost?
Note: The seat clamp diameter needs to match the diameter of your seat tube rather than your seatpost, which is a little smaller. For example, a 27.2mm seatpost (a size commonly found on road bikes) fits inside a 28.6mm diameter seat tube, so it’s a 28.6mm clamp you need.
Can I shorten seat post?
The simplest and cleanest way of doing this is with a pipe cutter. Measure how much you need to cut off (keeping this to a minimum) and mark. Gently tighten the blade of the seat post cutter to your mark, clamping it in place before rotating the seatpost.
Can a seatpost be too long?
As long as the minumum length is inserted into the frame you will be structurally safe. You can buy a shorter post of course. However, if you need to drop the saddle all the way to the frame the bike is likely too large for you and possibly dangerous, as you will have no standover clearance.
Can I get a longer seat post on my bike?
Pretty much all you can do though is put a longer stem, possibly raise and lower it, use wider handlebars and adjust the saddle angle+ position a bit further back (which may be easier with a different seat post). The biggest things you have to do are get the effective top tube right.
How long does my seatpost need to be?
a) Seatpost should end at least 25 millimeters below the lower part of the horizontal tube weld to the seat tube. b) Total inserted length should be at least 90 mm from the top end of the seat tube.
Is it OK to cut a seat post?
Cutting your seat post is one of the most effective ways of tearing your seat tube to pieces. Also, if you cut off the bottom, you will have to adjust the max height line by the same amount…that is, you need a certain amount of length in the tube to have the seat post be safe.