Hope HBSP323 Disc Brake pads are designed for use E4 RX4+ RX4-SH and Mono M4 disc brake calipers. These pads are dyno-tested in-house in Barnoldswick UK and available in Sintered or Organic compounds for various riding styles.Designed for use with Hope E4 RX4+ RX4-SH and Mono M4 disc brake calipersIncludes bolt and pad spring TECH SPECS table{border-collapse:collapse;width:auto;max-width:100%;} td{text-align:left;padding:12px;font-weight:350;word-wrap:break-word;} tr:nth-child(even){background-color:#f2f2f2} th{background-color:#eb212e;color:white;text-align:left;padding:8px;} .desc .specs-heading{font-size:24px;font-weight:600;padding-top:35px;border-top:3px solid #f0f0f0;display:inline-block;border-bottom:4px solid #eb212e;width:142px;margin:0;} Backing Plate Material Steel Compound Organic Pad Shape Number 40 Heat Sink No