Developed to meet the spec of the latest models of extreme superbike. Features RK’s only technology of XW-Ring. 2 lubrication pools and 3 contact lips. Triple barrier structure to further seal the lubrication and prevent debris to enter the chain. Designed to be the strongest, long-lasting chain available on today’s market. Highest tensile strength of all RK series and high rigidity for instant respond on acceleration. 42 kN (9442 lb). Maximum Engine Displacement (Offroad). 1,77 kg/100 Links. Maximum Engine Displacement (Street). Quad Bikes Wales Is The UK’s Largest Utility ATV Parts & Accessories Supplier And We Are Based In Pontardawe Near Swansea – Wales. We Stock A Huge Range Of Tyres, Aftermarket Parts & Accessories For All Your ATV Needs At The Lowest Price In Europe! You can check with your courier.