Brand x formula r1 the one db disc pads a high quality replacement formula r1 the one rx r0 disc brake pad available in sintered or organic organic brake pads have a short bed in time with a strong bite and low noise sintered pads offer high heat resistance and consistent performance in all conditions separating spring included for use with formula r1 the one rx and r0 brakessteel backing plate for excellent heat dissipationincludes separating springavailable in sintered or organicsold