Mountain Bike Seatpost Clamp Sizes

They come in various diameters lengths and offsets.

Mountain bike seatpost clamp sizes. Bike seat post clamp 31 8mm 34 9mm aluminum alloy seat tube clip bicycle quick release seatpost for mountain tube bike black by three by 5 59 5. Best mountain bike forks. 59 6 99 6. The diameter of a seatpost is exactly what the word says the diameter of the seatpost which give or take a few tenth of a mm is the diameter of the clamp.

Only steel frames and a shrinking number of xc bikes will accept the 27. It can be seen from picture 2 that the seatpost is marked as 31 6 mm wide and 410 mm long while it really measures only 31 42 mm. A database of seatpost sizes for various bicycles. A seatpost shim is a hollow aluminium ring that allows to use a specific diameter seatpost in a frame that is nominally too big for it.

Bontrager offers road and mountain bike stems in a variety of lengths and rises along with seatposts with a unique clamp design that makes them highly adjustable. Best mountain bike dropper posts. For example using the appropriate shim on a 27 2mm diameter seatpost will enable it to be used in a frame with a seat tube diameter designed for 31 6mm posts. This means the seatpost will probably not fit firmly enough to stay in place inside a seat tube meant for 31 6 mm wide seatposts.

Stems and seatposts help you achieve a proper bicycle fit. Offset is the distance between the centerline of the seatpost tube and the centerline of the clamp area. The most common types of bicycle seat posts are steel or aluminum with a tapered shaft at one end or a bicycle seat post that combines the post and the saddle clamp into one unit. The diameter is stamped on many seatposts usually on the part that is fits inside the bicycle s seat tube and gets scratched up and covered with grease sigh.

A wide variety of seat post sizes are available and it is important that the seat post size match the specifications of the bike frame. Measuring seatpost diameter using vernier calipers. If it s a modern bike there are only a couple of sizes on the market. Carbon seatpost 27 2 30 8 350mm 400mm 3k carbon fiber bike seatpost suitable for most bicycle mountain bike road bike mtb mtn bmx black 4 3 out of 5 stars 107 25 99 25.

Ride with more confidence and comfort with the perfect stem and seatpost for the way you ride. Best mountain bike cranks. The size of the seatpost is dependent upon the internal dimensions of the seat tube of the bicycle frame.