All-in-one complete front and rear brake kit replacement: r1 concepts eline series front and rear brake kit comes with (4) high performance brake rotors high performance brake rotors: made of g3000 grade cast iron with rust protection for ultimate rust protection. built with o.e.m specifications in mind, no modification required. oem specifications: formulated with g3000/g11h18 cast iron specification, these premium brake rotors are engineered to match oem specifications for durability, reliability, and stability. non-directional finish - each rotor is prepared with a non-directional finish to promote a faster and more even disc brake pad bed-in, along with quieter and smoother stops for longer lasting, consistent braking performance.
