This tool is used to determine the correct suspension preload settings for a dirt bike. It typically involves inputting measurements related to the bike’s suspension travel, with and without the rider’s weight, to calculate the amount of sag, which is the degree to which the suspension compresses under load. The resulting calculation informs adjustments necessary for optimal handling and performance.
Proper suspension setup is critical for a dirt bike rider to maintain control, comfort, and efficient power transfer. Sag settings influence how the bike responds to bumps, jumps, and changes in terrain. Correct sag ensures the suspension uses its full range of travel, preventing bottoming out and maintaining traction. Historically, riders have relied on manual measurement and trial-and-error to set sag. Modern iterations offer a more precise and efficient method.