Shimano SLX SM-RT70 Disc Brake Rotor, 180mm, Centerlock, For Road/Gravel/MTB
Rotor Size: 180mm. This SLX-level rotor features Shimano’s provenIce Technologies design, which uses a 3-layer construction (aluminum core and stainless steel surfaces) to dissipate heat quickly and maintain braking performance during extended descents.