Part No. 30-856.SL (oro2u.com)
DID Drive Chain 530 NZ SPRING Links Clip TYPE Black (RJ)
Super non-seal series 530NZ SDH
Beyond the noncall, achieves outstanding durability. Compared to the standard Series, significantly improve strength and abrasion resistance.

Strength is a standard 30% (average size). By strengthening plate tensile strength is approximately 30% of the standard.
Cross reference numbers ONLY. DIDSL530NZFJ DID530NZ FJ Spring Link