Hayes mx comp disc brake 160mm rotorhayes mx series have long been the go to answer for reliable stopping power in a mechanical set up from initial set up to the ride itself the mx brake from hayes is the ideal platform for flat bar mountain and pavement bikes features intended use xc trail finishcarbon fibre ud weave gloss finish pads semi metallic type 125 pad retention bottom load rotor l series compressionless housing included weight 208gbuyhayes componentsfrom chain re