RK Racing Chain GB520XSO-106 (520 Series) Gold 106 Link High Performance Street and Off-Road RX-Ring Chain with Connecting Link;

Pro X-ring chain lasts five to eight times longer than standard chain
Provides two more lubricant pools than conventional O-rings for longer life
Lubricated with specially formulated, vacuum-injected U-grease; locked in by tough Nitrile Butadine rubber X-rings
Polished and shot-peened link plates
High tensile strength ensures reliable performance