EK Chain 530ZVX3 Chrome 903A-530ZVX3-120 CHR TheZVX3 series easily surpasses every other brand with a tensile strength of 11,100lbs. Adopted new ZX-ring and last 15% longer than ZVX series stiffness and weight (4.85/100lbs.) For up to 1200cc Tensile strength: 9,400lbs.