RK Racing Chain GB520XSO-106 106-Links Gold X-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