Rear Rotor Laser-cut double disc ground 420 high carbon stainless steel, Direct- brake rotors; do not require any extra parts, bolt on just like a stock brake disc, Full-floating design rotors have an aluminum center carrier, Improves brake lever feel and modulation, Rotors cool as they rotate to lower brake operating temperatures, Design is self-cleaning, removes water as it rotates, Less tendency to warp, Manufactured in Spain, For maximum braking performance and rotor longevity, Galfer recommends using Galfer brake pads with Galfer rotors.