Regina 520 x 104 Links ZRE Series Xring Sealed Gold Drive ChainTechnical Specifications: Brand: Regina Made In: Italy Chain Pitch: 520 Chain Length (Links): 104 Master Link(s) Included with chain: Clip and Rivet Chain Color: Gold Chain Type: Sealed Chain Model: ZRE Seal Type (if applicable): Xring Seal Model (if applicable): Z Max Engine cc (Street): NA Max Engine cc (Offroad): 600 Tensile Strength (lbs): 7868 Wear Index (if available): NA Chain Weight (if available): 3. 71 New, high performance ZR chains with