Test duration: Several specimens in test bikes from different manufacturers
MINUS: gets stuck after a few rides in the rain, making saddle adjustment awkward
The type of seat post shown here is widely used by many road bike brands and is often fitted by manufacturers as original equipment on their bikes. Clamping with two bolts is actually a secure solution. However, the knurled screw, which is difficult to access under the saddle and is used to adjust the saddle angle, causes frustration. After a few rides in the rain at the latest, the screw is so tight that it can no longer be turned by hand. The saddle can then only be adjusted by completely loosening the rear screw, removing the saddle and turning the front screw in or out with an Allen key or open-end spanner to the assumed correct depth. If you then tighten the saddle again, you will almost always find that the saddle angle is still not correct - and the game starts all over again.
Our opinion: There are so many better clamping systems that there is nothing to be said in favour of this impractical variant.
(Photo: Daniel Simon)