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Shimano SLX SM-RT70-L Disc Brake Rotor - 203mm, Center Lock, Silver

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Shimano SLX SM-RT70 center-lock disc brake rotor delivers powerful and consistent brake performance in all riding conditions.
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
Aluminum spider
Includes lock ring with external serration
Requires external-type rotor lock ring when installing onto 15/20mm axle hub