HobbyStar Short Course Combo, 80A ESC and 550 Brushless, Sensorless 4-Pole Motor, 5.0mm Shaft, Includes Program Card

SKU: 385-45-BND

Availability: In stock

1 x HobbyStar 80A Brushless Sensorless ESC 2S-4S  
Program Card:
1 x HobbyStar LED Program Card  



A complete power package with a HobbyStar 80A brushless ESC, 550 brushless, sensorless motor and an LCD program card to dial it all in.  550 length and 4-pole design for maximum torque makes this combo ideal for your 2WD or 4WD short course truck.


An ideal ESC for your short course truck, the HobbyStar 80A ESC delivers the smooth, reliable power you need.  Fully enclosed design with a built-in fan capable of handling up to 4S LiPo power.  Features multiple adjustment points which can be programmed via LED Program Card via Star-Link USB link, and we even pre-wire it with high-quality 12AWG silicone wire (includes Dean’s style t-plug on power leads and 4.0mm bullet-plugs on motor leads).


NOTE: ESC is rated for 4S but 3S should not be exceeded with the 550 motor in this combo.



  • Enhanced throttle response, explosive acceleration and smooth, linear operation for optimal driveability
  • Handles up to 4S LiPo 
  • Multiple adjustment points
  • Multiple protection features: Low-voltage cut-off, over-heat protection and signal loss protection.



  • Continuous Current: 80A
  • Burst Current: 570A
  • Resistance: 0.0003ohm
  • Suitable Car: 1/10 on/off-road
  • Motor Type: Brushless sensorless
  • Cell Count: 2-4S LiPo, 5-12S NiCd/NiMh
  • BEC Output: 6V/3A
  • Dimensions: 52x38x36mm
  • Weight: 107g 


The HobbyStar 550 4-pole brushless, sensorless motor is based on the same design as our powerhouse 540 sensorless motor, but features a longer 550 sized can for extra torque. The perfect motor when a high-torque, high-performance powerplant is required such as 4x4 short-course trucks.  A beautifully machined T6 billet-aluminum housing contains a 4-pole, 12-slot high-torque rotor spinning on High-RPM ABEC5 oversized bearings for a powerful, reliable motor choice for your 1/10 scale vehicle.  Comes with motor leads with 4.0mm bullet connectors already installed. Available in a wide variety of KV ratings.



  • 4-pole 12-slot high-torque design
  • CNC machined 6061 T6 billet aluminum can
  • High-purity copper windings maximize efficiency
  • High-RPM ABEC5 oversized bearings
  • Precision balanced rotor for smooth operation and maximum RPM
  • Super-thin (0.2mm) stator laminations 
  • Removable/replaceable rotor
  • Precision Engineered for maximum energy conversion


Product KV (RPM/Volt) Max Voltage Max Amps Rotor Poles IO Resistance Watts Max RPM Length (mm) Diameter (mm) Weight (g) Shaft Diameter (mm) Shaft Length (mm) Connectors
550/2Y 3500 3S 85A 4 2.5A 0.0089 1200W 50,000 55 36 195 5 17 4.0mm gold
550/3.5T 3800 2S 92A 4 2.8A 0.0083 1200W 50,000 55 36 195 5 17 4.0mm gold
550/3T 4300 2S 100A 4 3.7A 0.0058 1200W 50,000 55 36 195 5 17 4.0mm gold


Customer Reviews (1)

Best of the bestReview by Rooster79720 (on YouTube)
You want fast and responsive? You want reliable? You want to be on top every single time? Then this is the combo for you. I run speed runs in this combo. Ran over 58 mph with 76/18 gears in a stock stampede! Now try 78+ ina slash on 3s with multiple passes when combined with the 3s HobbyStar 6500 75c lipo. Watch my videos, see my runs. This combo can do over 100 when set up right in a non aerodynamic body!!! I will never use another vendor than RCJuice. They only sell top notch stuff. And I guarantee it will out perform the 'big names' when side by side with all other aspects being equal. (Posted on 9/24/2016)

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Can I use 3s with this esc and a 3500kv motor?
While the ESC in this kit is rated for 3S, 2S should not be exceeded on 3500KV and above motors.
RCJuice answered on February 5, 2020

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