Leopard 4082, 4-Pole Brushless Sensorless Motor For 1/8 Scale/Lighweight 1/5 Scale

SKU: 375-85-CNF

Availability: In stock


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The Leopard 4082 features an extra-long rotor for incredible torque in 1/8 vehicles, lightweight/on-road 1/5 scale vehicles,900mm-1500mm length boats.  


Leopard motors are built using the highest grade components for outstanding performance and long life.  The latest generation 4-pole rotors provide massive torque, and are Kevlar wrapped to ensure the magnets stay put at all RPM’s. All components are precision machined, balanced and hand-built to guarantee quality, and with an extensive product line including many sizes you just won’t find from other manufacturers you are sure to find a Leopard motor to fit your application.



  • Precision machined aluminum housing
  • Kevlar wrapped, 4-pole rotor
  • Imported high-speed Japanese bearings
  • Hand wound stator, using high-purity/high-temperature copper wire
  • Excellent heat dissipation


Model Max Amps Max Voltage Max Power KV(RPM/Volt) Resistance No-Load Current (15V) Dimensions (mm) Mounting Hole Depth (mm) Shaft Length (mm) Shaft Diameter (mm) Weight (g)
4082/2Y 120A 33V 3500W 1600 0.0075 2.2A 39.8x82 7 20 5.0 485
4082/3D 140A 25V 3500W 2000 0.0006 4.5A 39.8x82 7 20 5.0 485


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What is the max rpm on the 1600 and 2000?
Max RPM will depend on your application. A motor will spin at the KV multiplied by the voltage you run, for example a 2000KV motor would spin at 29,600RPM when run on 4s (2000 x 14.8V). Naturally, the higher the KV the more top speed you will get but you'll also lose some torque, and most importantly you are going to build heat. As with anything mechanical, there regular laws of physics apply and you are always going to have a by-product to building power which in our case is heat. Heat is your #1 enemy in electronics and will burn up components fast so it's critical to monitor temps and adjust gearing accordingly. A higher KV motor is less efficient and will therefore run down a battery quicker in addition to building that heat, and you will often have to gear down (smaller pinion or larger spur) to keep temps in check which is going to knock off some of that speed. A lower KV motor is more efficient, runs cooler, makes more torque and allows you to pull a bit of a taller gear (larger pinion or smaller spur) to make up for that lost RPM. As a general rule, it's better to go with a higher voltage and lower-KV setup but it's still critical to always monitor those temps on a new setup, and monitor them often until you are confident of your operating temps.
RCJuice answered on September 11, 2019
Think this motor would be ok running in a 6s Xmaxx?
The X-maxx runs a larger motor than an 1/8 sized motor, this would likely overheat quickly in a heavy/large vehicle like an X-maxx.
RCJuice answered on September 10, 2018

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