RK GB420MXZ Gold Chain 130L - PAX RACING Master link type: clip. Your original purchase of RK sealed-ring chain is warranted to be free of defects in material and workmanship for 20,000 miles of street riding or one year of off-road use. 420 Master Link RK Chains 420 X 86 Links MXZ Series Non Oring Gold Drive Chain 112 Link Chain RK Racing Chain GB420MXZ-CLIP-CL (420 Series) Gold Non O-Ring Clip-Type Connecting Link ... (420 Series) 138-Links Standard Non O-Ring Chain with Connecting Link Clip connecting link for RK chains RK 420SB LINK CHAIN Maximum wear life index: 300.Maximum tensile in pounds/feet: 5000 pounds/feet.