RK 520 XSO RX-Ring Chain - 120 Links , Chain Type: 520, Chain Length: 120, Chain Application: All 520XSO120Technical Specifications: Brand: RK Chains Made In: Japan Chain Pitch: 520 Chain Length (Links): 120 Master Link(s) Included with chain: Rivet Chain Color: Natural Chain Type: Sealed Chain Model: XSO Seal Type (if applicable): Xring Seal Model (if applicable): RX Max Engine cc (Street): 750 Max Engine cc (Offroad): 750 Tensile Strength (lbs): 8300 Wear Index (if available): 3500 Chain Weight (if available): 3. 44 Provides two more lubricant pools than