Driven Plate
September 30, 2007
A clutch plate which is indexed onto a motorcycle clutch inner hub by tabs or splines around its inside diameter. Driven plates are usually made from steel and have a smooth surface - they drive the transmission input shaft through the clutch inner hub.
[...] Driven (metal) Plate - Steel or aluminum ring-shaped disks that interface between the clutch hub and the friction plates. Steel plates are most often found in enduro/trail machines and provide longer wear and greater flywheel effect. Aluminum driven plates, near universally found in motocross type machines, are lighter, less durable and provide less flywheel effect. Additionally, aluminum driven plates wear out nearly as quickly as the friction plates themselves, in the process fouling transmission oil at an accelerated pace. [...]