The Kingpin Suspension System is a leaf spring suspension system, which is found on the Cannondale Topstone range of Gravel Bikes. This new suspension system allows greater comfort for gravel bike riders, which it’s claimed provides the same levels of absorption and comfort, as running a tyre which is 9mm wider than those fitted.
The flex points of this suspension system is between where the seat stay and seat tube meet, which means that a rider when sitting accesses and benefits from an extra 30mm of travel VS those who ride standing. This provides an unobtrusive suspension performance, which is not noticeable when gaining speed or heading up steep ascents.
There is no lockout feature on the kingpin, but instead - extensive market research has been undertaken to ensure that the right amount of travel is used.