Shimano RT64 Steps Center Lock Disc Rotor, Internal Lockring with Magnet

Shimano SM-RT64 rotors offer secure and easy set-up with the proven Center Lock mounting system Precision cut stainless steel braking surface improves pad clearing in muddy conditions while aiding cooling under high load Rotor contact surface has been developed for excellent pad clearing and cooling which increases pad performance and life Alloy spider supports rotor surface, increasing rigidity and reducing weight Rotor houses the magnet necessary for speed sensor function on Shimano STEPS equipped E-bikes allowing frame clearance for wider tyres Comes complete with lockring Product Type – Disc Rotors Discipline – E-Bike Colour – BLACK Colour – Silver Size  – Centre Lock: 203 mm Internal Locking