SHIMANO SM-RT66 SLX 6-Bolt Disc Brake Rotor (160-mm) Go to amazon.com Related posts How to buy the best 160 mm rotor? FeatureIncludes Rotor boltsMounts to IS six-bolt hubsShimano Reference Number: SM-RT66 DescriptionShimano RT66 offer 6-bolt mounting at an SLX quality level.