Spec:The flywheel is manufactured using high strength chrome moly steel in a single mass type. Single mass, as opposed to double mass flywheel means that the entire flywheel is cnc'd out of one single piece of raw material, sometimes referred to as billet made.
Since the starter ring is integrated into the design, there's no need to transfer a press fitted or even welded starter ring from the old flywheel. Because of this, there's never any risk of a loosened or unbalanced starter ring.
The friction surface is also integrated into the design.
The flyweel has been designed with the highest temperature endurance, minimum fracture tendencies and optimal weight placement. They are made in state-of-the-art CNC machines to ensure best precision and are dynamically balanced to reduce vibrations and bushing wear.
6 kilos (STD 12kg)
More info:When mounting a light weight flywheel, it is normal that a harmless "rattling" sound is introduced during idling