The all-new HS2 Rotor is a mountain bike-specific rotor designed to improve brake performance while reducing noise and increasing heat dissipation. Featuring a new brake track pattern for increased pad traction and recessed spokes with thermal dissipating paint, the HS2 is a more powerful, quieter rotor with best-in-class heat management. Lockring not included Details: Rotor type: HS2 Center Lock Mount: Center lock Rotor size (mm): 160, 180, 200, 220 Thickness: 2.0mm Material: Steel Includes externally notched lockring Compatibility: Hub: Center lock Pad Compound: All Caliper: All