HobbyStar Short Course Combo, 80A ESC and 550 Brushless, Sensorless 4-Pole Motor, 3.2mm Shaft, Includes Program Card

SKU: 385-44-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
550/3.5Y 1950 4S 46A 4 1.2A 0.0231 1200W 50,000 55 36 195 3.175 17 4.0mm gold
550/5T 2600 3S 63A 4 1.5A 0.0146 1200W 50,000 55 36 195 3.175 17 4.0mm gold
550/2Y 3500 3S 85A 4 2.5A 0.0089 1200W 50,000 55 36 195 3.175 17 4.0mm gold
550/3.5T 3800 2S 92A 4 2.8A 0.0083 1200W 50,000 55 36 195 3.175 17 4.0mm gold
550/3T 4300 2S 100A 4 3.7A 0.0058 1200W 50,000 55 36 195 3.175 17 4.0mm gold


Customer Reviews (3)

exceed sunfireReview by Clyde
Like Jeremy says, WOW, It just rips, can't believe the power, no complaints. (Posted on 7/12/2020)
Amazing productReview by Jeremy
I put this system into my sons Arrma Granite 4x4 mega with a 17T pinion on 3s that little truck rips! Tons of power, very smooth delivery. Left all the ESC settings box stock and it feels like it should. Breaks might be a little strong for that light of a truck but we can adjust it later. We run on a lot of grass and some gravel and we haven't had an issue with the heat at all. ESC stays completely cool and you can keep your finger on the motor for a good bit of time before it gets to warm feeling. This struck screams, balloons the tires, and starts pulling wheelies. It's like a mini Outcast, just a wild little bugger, especially for my six years old. We have been having a blast with this combo and I can't recommend it enough. (Posted on 4/27/2020)
Perfect for my Traxxas Stampede.Review by Dan
This was the perfect upgrade to my Traxxas Stampede. The power, quietness and fit where just right. I would recommend this to anyone that is looking for a motor esc combo for their 1/10 scale rc car or truck. (Posted on 4/24/2020)

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