Buy Bicycle Seatposts

The diameter is usually laser-etched near the minimum insertion line on your existing seatpost (e.g., 27.2mm, 30.9mm, 31.6mm, or 33.9mm). If worn off, measure the internal diameter of the frame seat tube with a digital caliper.

Folding bicycles have compact, low-slung frames that require longer seatposts (typically 33.9mm diameter by 550mm to 650mm long) to achieve proper leg extension for adult riders while still retracting all the way down for compact folding.

Suspension seatposts use internal coil springs or elastomers (offering 30mm to 50mm of vertical travel) to cushion your spine from bumps on unpaved paths, potholes, and paved park connectors, significantly reducing lower back fatigue.

6061-T6 aluminum alloy offers maximum durability, dent resistance, and value for daily commuting. Carbon seatposts are lighter and naturally dampen high-frequency road vibrations, but require careful torquing with a torque wrench.

Yes. Telescopic two-stage seatposts allow taller riders to get proper saddle height on small folding bikes, while dropper posts allow mountain bike and commuter riders to drop the saddle at traffic stops with a handlebar remote.

Yes. If you collect in-store at Tai Seng or Canberra, our technicians will apply anti-seize grease, torque the clamp to proper spec, and set your saddle level and setback to your riding preference.