Part # 27473 Pkg Qty 1 UPC 784695274730 MSRP $189.99 MAP $112.99 Availability In Stock Qty Add to Cart_Features: CNC machined lightweight can Drag racing specific stator Low-resistance, silver plated solder tabs Optimized air cooling Dual precision ball bearings Drag racing specific balanced rotor High-strength magnet Adjustable timing Completely rebuildable Competition proven_Voltage: 3.7-7.4 RPM/7.4V: 55107 kV: 7447 Power (W): 535 Efficiency (%): 93 Rotor Number: 27475 Cells: 2S LiPo Diameter (mm): 35.9 Length (mm): 50.3 Shaft Diameter (mm): 3.15 Weight (g): 170_Crafted specifically for the requirements of drag racing Externally, the 540.DR looks much like its cousin, the 540-M4. But the heart of the motor is where the major changes can be found. A new stator with an updated profile, thicker laminations, and unique material has been crafted specifically for the requirements of drag racing. Ample torque off the line with heavy pull through the pass improve ET and consistency. A balanced, high-strength 13.5mm rotor suspended between precision ball bearings provides powerful performance pass after pass. To fine-tune for varying track conditions and surfaces, a variety of optional rotors are coming soon! Like all Reedy motors, the latest brushless motor technology along with the engineering experience that is responsible for 30 World Championship titles has been incorporated into its design. Several versions are available to suit various tuning requirements and track conditions._Voltage: 3.7-7.4 RPM/7.4V: 55107 kV: 7447 Power (W): 535 Efficiency (%): 93 Rotor Number: 27475 Cells: 2S LiPo Diameter (mm): 35.9 Length (mm): 50.3 Shaft Diameter (mm): 3.15 Weight (g): 170