.top{margin-bottom:30px;}.top li{margin-left:5%;margin-right:5%;margin-top:10px;line-height:120%;list-style-position:outside;} Shimano XTR RT-MT905 Disc Brake Rotor - 180mm 6-Bolt. The Shimano RT-MT905 6-bolt type disc brake rotors deliver superb stopping power for the most aggressive riding. The ICE technologies combined with FREEZA disc brake rotor construction rapidly dissipates heat for more consistent braking performance. Delivers superb stopping power consistency and control for peak performance in the most challenging riding conditions Dramatically lowers surface temperature to improve braking performance and consistency (less fade) while reducing system noise and extending pad life Operates significantly cooler compared to stainless steel disc brake rotors under the most extreme conditions 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 Rotor Size (mm) 180 Hub/Disc Compatibility 6-Bolt