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Turnigy XK2040-4500KV Brushless Inrunner

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Turnigy XK2040-4500KV Brushless Inrunner


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TURNIGY XK motors are without question one of the best motors on the market today. It all starts in our very own factory where we install precision bearings, correctly rated magnets, balanced rotors, tool-steel shafts and stators that are wound by hand. We rigorously test each and every component at 14 critical points during construction, testing everything from materials all the way through to final performance tests.

Because we design and build these motors completely in-house we control the production and ensure product consistency from design right through to shipping. We removed the middle-man to bring you factory prices while not sacrificing quality or performance. 

• Hand-wound for maximum copper fill.
• Precision-balanced rotor will boost the efficiency and power performance of the motor.
• Nickel-plated sintered neodymium rotor for maximum motor acceleration, braking power and performance in high-temperature conditions.

Size: XK2040-4500KV
Poles: 2
KV: 4500
Max Current: 32A
Max Voltage: 8.4V/2S Lipo
Case Length: 40mm
Case Dia: 20mm
Shaft Dia: 2.3mm
Total Length: 50mm
Weight: 64g

  • Kv(rpm/v) 4500.00
  • Max Current (Motor) (A) 20.00
  • Resistance (mh) 0.00
  • Max Voltage (V) 8.00
  • Power (W) 168.00
  • Shaft A(mm) 2.30
  • Length B (mm) 40.00
  • Can Diameter C(mm) 20.00
  • Can Length D(mm) 38.00
  • Total Length E(mm) 50.00

Dimension Diagram Guide

  • attributeset-10


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XK2040 | Verified Buyer

  • Quality
  • Overall
  • Value

Great little motors!

Jun 22, 2022

The entire XK series of motors are great, these little versions really pack a punch installed in 1/18 and 1/16 scale cars

Casey | Verified Buyer

  • Quality
  • Overall
  • Value

Great Value

May 18, 2022

This motor is small, light, and fast. The only thing you need to watch out for is it getting too hot. Great value.

Keen boater | Verified Buyer

  • Quality
  • Overall
  • Value

Being used in small boat with cooling jacket

Jun 25, 2019

This one i have had running in a boat but may be over proped am awaiting smaller props . ? is Hobbyking going out of boat parts as it apears a lot of parts are out of stock

Oliver P | Verified Buyer

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Customer Rated

Oct 22, 2015

This motor is nice, but I think it's a little too small for my 1/18 ECX Ruckus in which I've installed it in along with a TrackStar 30A ESC. I even dropped down from a 14T to a 12T pinion thinking it'll push the MT faster. There's a little cogging, but it doesn't affect the performance any. The motor is strong enough to push the truck through grass that is as tall as the truck. It is amazingly stronger since installing it. I believe all I have to do is fine tune the ESC to give it what I want. I did order a larger motor that is pulling more amps to see what it'll do.

Customer files
Brushless 18th ECX Ruckus 4WD Download [4956]
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