Mountain bike disk brake rotors come in a variety of sizes, ranging from 140mm to over 200mm. Generally, the larger the rotor, the more stopping power it will provide. Large rotors also help dissipate heat better, which improves brake modulation and maintains power during long, steep descents.
The best brake rotors weigh less and provide advanced features for increased heat dissipation. Some rotors aren't just one piece of metal but are rather two pieces, which allows the rotor to float between the brake pads, lining up perfectly. Shimano also sells IceTech rotors, which feature two different types of metal for advanced heat reduction.
|Alligator Wind Cutters/ Seration||Ashima Airotor||Avid Avid G2CS||Avid Clean Sweep||Avid HS-1 Rotor|
|Avid Roundagon||Dirty Dog Web Rotor||DT Swiss DT Swiss HWZXXX00S1588S Centerlock Center Lock to 6 bolt disc brake hub adapter||Ebcm EBC 180mm Rotor upgrade - MTBD 160-203M||Hayes V6 Rotor|
|Hayes V7 Rotor||Hayes V8 Rotor||Hope Floating Rotor||Magura Marta SL Rotor||Shimano RT-86|
|Shimano Saint SM-RT80 Center lock||Shimano SLX M675 Disc Rotor SM-RT66 (160-mm)|