great chain... lovin my 520 convention set up
Designed to reduce friction up to 50%, GYTR® QX-ring (Quadra-X Ring) chains last 50% longer than the conventional O-ring chains. The 520 GDX can be used for off-road motorcycles and sportbikes up to 750cc and ATVs up to 700cc.
Quadra-X Ring: Quadra-X Ring design reduces friction by as much as 50% due to a smaller contact area. The X-ring's 4-point contact patch also offers better sealing than conventional O-rings. Lab tests show the Quadra-X ring chains last 50% longer than a standard O-ring chain.