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HK Hobbies

HK 540-S 35mm Outrunner Rock Crawler Motor

Regular price $35.00 USD
Regular price $59.99 USD Sale price $35.00 USD
Sale Sold out

In stock!

The HK Hobbies 540-S 35mm Sensorless Outrunner Brushless Motor is designed for ultra smooth scale and performance crawler applications.  Boasting brushless efficiency and super strong Neodymium magnets, this motor is lighter and smaller than a 540 brushed motor but with more torque! 

These motors are factory wired with super flexible, 4.5" long open ended 16AWG silicone wire without connectors.

NOTE: Outrunner type motors are water resistant, but require post run maintenance if exposed to water.  Clean and re-oiling of bearings recommended.  

Recommended Uses:

  • Element Enduro,  Trx4 Sport, SCX10 models
  • Scale and Trail rigs with single speed  transmissions
  • Comp Trucks for Sorrca, Recon G6, etc
Not Recommended:
  • Scale and Trail rigs with two speed speed transmissions
  • U4 Style Trucks 
  • Rock Racer Trucks (Axial Bomber, Axial Wraith, etc)
  • Lightweight Compact housing
  • Brushless Outrunner efficiency 
  • Excellent torque with smooth startup 
  • Standard 540 M3 Mounting Pattern
  • Standard 1/8th Size Shaft with D Cut
30 day Limited Warranty
Warranty covers manufacturing defects and does not cover water damage, rust, heat damage from overgearing, modifications, improper installation, misuse or abuse.


Kv: 1850Kv 

Type: 14 pole/12 slot Brushless Outrunner
Magnets: N42 Neodymium Magnets
Length: 35mm 
Diameter: 35mm 
Stator: 28x14mm 
Laminations: 0.2mm Kawasaki Steel 
Weight: 105 grams
Input Voltage: 2s-4s Lipo
Mounting Pattern: M3 25mm 
Shaft Diameter: 1/8" with flat (3.175mm) 
Wire: 4.5" 16AWG Silicone wire