A seatpost consists of a tube, post head and bolts. And it actually does a straightforward job: it has to be the right length to connect the frame and saddle, be sufficiently adjustable and easy to set. That's it. Cyclists would also like it to be as light as possible, it should be springy and its shape, colour and finish should match the bike and their own requirements. Up to this point, you can see, feel and try everything. But whether the seatpost will hold up - until proven otherwise - is a question of trust in the manufacturer and their idea of doing a good job. Because when it comes down to it, life and health depend on the seatpost: the loads that the one-sided clamped carrier has to endure are considerable. If you rumble through a pothole, our real data measurements show that the rider briefly puts four times their weight on the saddle and seatpost; if a cyclist weighs 100 kilograms, this corresponds to a load of up to 3,000 newtons, depending on the sitting position. If a seat post breaks under such a load, falls and serious injuries are inevitable. Reason enough to find out what current lightweight seat posts can withstand.
Load times three
When making our selection, we focussed on particularly light and different constructions: We chose the top carbon model and the lightest aluminium post from the most popular brands.
The test results of these models can be found below as a PDF download:
3T Dorico Pro
3T Palladio LTD
FSA K-Force light
FSA SL250
MFCK road bike
Pro Stealth Evo
Pro Vibe 7S
Ritchey Superlogic 2
Ritchey WCS Aluminium
Rose RC 180 S Carbon
Syntace P6 HiFlex
Tune Strong piece
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Downloads:
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