Middle drive sprocket for the timing chain. The wheel translates the balance shafts so that they also rotate in the same direction. The sprocket has a special plastic coating and should be replaced every time the timing chain is changed, as only then can the tooth flank clearance be set correctly. Manufacturer Information about the manufacturer BAR-TEK BAR-TEK Motorsport GmbH Im Rauschen Auel 3, 51491 Overath-Brombach, Germany info@bar-tek.com