Are all bike seat posts the same size?

How do I know what size seatpost to get?

To determine it, measure the internal diameter of the seat tube, that is, the one which the seat post inserts into. Make sure you do not confuse it with the tube’s external diameter, it is not needed. Use a precision caliper for that, your measurements must be accurate to 0.1 mm.

How do I choose a bike seat post?

What seat post should you buy? Leisure riders just need to make sure they’re buying a seat post with the correct diameter and in the correct length. If you’re in doubt, remove your existing seat post and have a look towards the end of the post and chances are it will have the diameter and length stamped on it.

Can I put a longer seat post on my bike?

Though some brands like to play exception to the rule, the majority of bikes are designed to fit a seatpost of either 31.6mm or 27.2mm. … However, whilst you can always cut a seatpost that’s too long, you can’t add to the length if it’s too short.

How do you measure a tube seat?

Seat tube length is measured from either the centre of the bottom bracket to where the top tube and seat tube meet (Centre-Centre or C-C) or to the top of the seat tube (Centre-Top or C-T).

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Can you cut a bike seatpost?

Cutting the post down is the proper way to do it really. Seat posts need to have a minimum amount of tube in the frame for safety though, so do some measuring and just cut off as little as you can get away with and file down any rough or sharp edges.

Is a 56cm bike medium or large?

What’s the right road bike size for me?

Rider Height Suggested Road Bike Size
Feet & Inches Centimetres Frame Size (cm)
5’6″ – 5’9″ 168cm – 175cm Medium (54cm – 55cm)
5’9″ – 6’0″ 175cm – 183cm Large (56cm – 58cm)
6’0″ – 6’3″ 183cm – 191cm X-Large (58cm – 60cm)

How do I know what size dropper seatpost I need?

To choose the correct travel dropper post, measure from the seatpost collar to the seat rail (in your climbing, or highest setting) on your current bike. Subtract 50mm from this measurement and the resulting number is the maximum travel length dropper post you can comfortably run.