This Reedy 12.5x5.0mm 540-M4 Mod Rotor is a great way to fine tune your Sonic 540-M4 motor to adapt to varying track conditions and applications. Available in an assortment of optional rotors, each laser etched with its specification and part number for easy identification and technical inspection.
This product was added to our catalog on March 13, 2020
Torque Rotor, and is intended for use with the Team Trinity D4, D3.5, Kill Shot. 24K and Monster modified motors. The Trinity motor line has a complete parts support and tuning system ...