This Electronically Adjustable FOX Rear Suspension Preload lets you adjust the preload setting of your bike’s rear shock on the RIDE COMMAND touchscreen. Just touch the screen to indicate approximate rider weight, whether a passenger is onboard, and how much cargo is being carried. The spring preload is then automatically and electronically adjusted to ensure optimal ride quality and comfort. It is a convenience-enhancing upgrade from the previous manual-adjust process, and it can be adjusted on the fly to suit rider preferences.FOX is a registered trademark of Fox Factory, Inc.