Mountain Bike Seat Post Sizes

These are rods with an increasing diameter from one end to the other with a scale noting the diameter in standard sizes. 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. Upanbike aluminum alloy bike seat post length 350mm black for mountain bike fixed gear bike seatpost four sizes for you to choose 4 6 out of 5 stars 192 12 99 12.

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A database of seatpost sizes for various bicycles.

Mountain bike seat post sizes. Upanbike bike bicycle mtb replacement extra long seatpost seat post 17 7inch 450mm φ 25 4 27 2 28 6 30 4 30 9 31 6mm by upanbike 21 99 21. The most important dimension to consider is diameter as it must correspond to the internal diameter of your seat tube in order to have a snug fit. Using special seat post sizing rods. Alternately you could check the diameter of a seatpost that fits.

The rod is simply placed in the seat tube and the matching diameter is the one just above the end of the seat tube the first visible part of the rod still sticking out of the tube. Bicycle seat post sizes are specified in diameter and length. The most important number is the diameter. 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.

99 22 99 22. Various seat post lengths will fit a bike but only one diameter will be the correct one for your specific type and frame design.