What size seatpost clamp do I need?

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.

How do you measure a saddle clamp?

Seat post clamp size refers to the inside diameter size of the clamp. This should correspond to the outside diameter of bike frame where the clamp is used. Just measure the outside diameter of the frame where the clamp will be used.

Are bike seats Post Universal?

Yes, most modern bike seats are universal and can be interchanged with different seat posts. The exceptions are if you have much older equipment or a specialized bike. It’s best to check the number of rails and the rail width on your saddle to ensure a correct fit to the seat adapter.

How do you measure a bike seat post?

To measure, you place the rod inside the seat tube and match the diameter. The rods are designed to have an increasing diameter from one end to the other. Therefore, the correct reading, which matches, is the one above the end of the seat tube.

How do I find out my seatpost size?

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 you measure a bike seat post diameter?

How big is a BMX bike seat clamp?

Bicycle seat post clamps in various sizes. Supercross BMX bicycle seat clamp – 25.4mm (1″) – BLUE (NOS!) Supercross BMX bicycle seat clamp – 25.4mm (1″) – SILVER (NOS!) Many seats do not come with the “guts” to attach them to your seat post or the original guts are rusty and/or corroded. This is a brand new seat clamp (guts) in black.

How big are the Dia Compe seat clamps?

Dia-Compe has re-released their popular 2 piece seat clamp from the early 1980’s. These are BRAND NEW – they are not Color: BLACK Size: 25.4mm (1″) inner diameter (fits most frames that take a 22.2mm (7/8″) seat post, but as always, measure the outer…

What was the average size of a bicycle seatpost?

The first bicycle frames were made mostly from steel, with steel tubes of a standard (outer) diameter. The British and Italian standard diameter for seat tubes was 1 1/8″ (28.6 mm). Older French bicycles used 28 mm tubing. Old US bicycles (mostly BMX and older bikes that used one-piece cranks) was 1″ (25.4 mm).

What kind of seat guts do BMX bikes have?

Brand new seat guts in correct gold tone (yellow zinc) for your old school BMX seat. All Viscount seats in the mid 1980’s had seat guts with this finish. Made by Viscount. Fits on most standard 7mm seat rails and the clamp is 7/8″.