Product Review
Shimano XT RT81 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 Includes standard type rotor lockring Item Specifications Hub/Disc Compatibility Center-Lock Disc Rotor Size 140










