.top{margin-bottom:30px;}.top li{margin-left:5%;margin-right:5%;margin-top:10px;line-height:120%;list-style-position:outside;} The Hope Vented rotor is constructed of three pieces and uses internal fins to allow air to flow between the two friction sides. Induced air flow significantly reduces heat build up in the rotor Vented rotor is designed specifically for V4 series brakes Fantastic and consistent braking performance in wet conditions thanks to its capability to clear the water later through its fins Dyno tests show up to 15% less heat build up compared to floating rotors Designed with a wider braking surface to make them more compatible with other brakes If your new rotors are a different size than the ones you&';re replacing, then you&';ll need new brake adapters! Check out our guide to getting the right brake adapters to spend less time on the computer and more on the trails. table{border-collapse:collapse;width:100%;}td{text-align: left;padding: 8px;font-weight:350;}tr:nth-child(even){background-color:#f2f2f2}th{background-color:#eb212e;color:white;text-align:left;padding:8px;}.desc ul{font-size:24px;font-weight:600;margin-left:-25px;padding-top:35px;border-top:3px solid #f0f0f0;}.desc li{list-style:none;border-bottom:4px solid #eb212e;width:142px;} TECH SPECS model V4 Vented size 203mm mount 6-bolt thickness 3.3mm weight 248g color blue