Maclan MRR Short Stack Competition Sensored Brushless Motor (13.5T) MCL1015 The Maclan Racing MRR Short Stack Competition Sensored Brushless Motors are well suited for any stock spec class in RC car racing. Featuring the latest hall sensor technology and highest grade copper wires, the MRR Short Stacks are a no compromise stock racing motor option.Features: The latest hall sensor technology that precisely deliver all the RPM and torque to you. Short stator design for the lowest internal resistance and maximum performance (13.5/17.5/21.5) Highest grade copper wires provide maximum conductivity with no compromise. Heavy duty concave shape soldering tabs minimize the resistance and easy soldering work. CNC 6061 T6 full aluminum case with maximum venting design for optimized durability and airflow cooling Rebuild-able structure allows easy maintenance. ROAR Approved Includes 200mm Sensor Wire Specifications:Turn: 13.5Case Length: 2.08in/53mmCase Diameter: 1.42in/36mmShaft Extension: 0.552in/14mmShaft Size: 3.17mmWeight: 6oz/170g ±2gPoles: 2 PolesMax Voltage: 3S Li-Po (10.5T ~25.5T)Short Stack Design: YesStock Class Default Rotors: 10.5T~21.5T MCL4076 12.5mm Torque Spec Rotor