Shimano SLX RT68 Centerlock Disc Rotors
Requires SM-HB20 external-type rotor lockring when installing onto 15/20mm axle hub, see BR8088
3-layer structure with aluminum core and two stainless steel outer layers reduces rotor surface temperature approximately 100 degrees Celsius compared to all-steel rotors
Alloy spider for enhanced rigidity and reduced weight
Includes standard type rotor lockring
