TRP R03E Disc Rotor TRP's R03E rotor was designed to meet the demands of E-MTB and DH riders who require the very best in braking technology. The R03E rotor utilizes a floating rotor design to increase cooling performance. 2. 3mm rotor thickness ensures that the rotor will stay stiff and offer consistent braking performance even at high speed. The R03E's improved design has been optimized to reduce vibrations, which further improves performance and braking consistency. If you want nothing less than the top tier in braking performance for your E-MTB or DH bike then the TRP R1C rotors are for you. Features DESIGNED FOR DH AND E-MTB USE ONLY2. 3mm thick rotor design improves overall stiffness Improved design reduces vibrations Floating rotor design offers increased cooling performance Rotor wear indicators help you monitor the lifespan of the R03ESPECIFICATIONSDiameter180mm, 203mm Material Steel & Aluminum Intended Use Gravity, E-MTBWeight | Trp | R03E Disc Rotor - 2. 3Mm 180Mm, Center Lock, 2. 3Mm Thick, Dhr & E-Mtb Only