Includes 8 friction discs. Sold as set. Aramid material is a step up from Alto''s ''Red Eagle'' friction material and is also bonded to a lightweight backing plate. The Aramid series are ''High Performance'' friction plates for motorcycles which are equipped with high-output engines that are ridden hard. They offer excellent heat resistance and endurance. Just ask anyone who has worked with or has ridden a bike in which a set of these Alto clutch plates were installed. OEM replacement reference 37911-90. Note: Will fit XR1200 models; when 39897-02 narrow friction plate is re-used. 39897-02 is not available through Motorcycle Storehouse.