Reedy 550-SL Sensorless 4-Pole Brushless Motor (4000kV)

This item is discontinued and no longer available for purchase. You may want to search our site for a similar item.
Low Price: $69.99
Discontinued Online
This is the Reedy 4000kV 550-SL Sensorless 4-Pole Brushless Motor. The 550-SL sensorless brushless motors are the perfect choice for an enthusiast looking to upgrade their RTR motor with one that provides increased power and improved reliability. Developed with the engineering experience that is responsible for 28 World Championship titles and incorporating the latest brushless motor technology into the design, these motors have been built with the hobbyist in mind while remaining perfectly suited to competitive on track action.

Due to the sensorless design, Reedy 550-SL Brushless Motors operate powerfully and efficiently without a complicated sensor harness. The 550-SL features a high-torque 4-pole rotor and 5mm output shaft, making it an excellent choice for the increasingly popular short-course 4WD category.

  • Oversized precision ball bearings
  • High-torque 4-pole rotor
  • Hardened 5mm steel shaft
  • Triple-insulated windings
  • Sensorless operation
  • 3.5mm connectors
  • Completely serviceable
Cells: 2-3S LiPo/4-8 Cell NiMH
RPM/Volt: 4000kV
Diameter: 36mm
Length: 55mm
Weight: 200g (7.1oz)
Shaft Diameter: 5mm
Max Efficiency Current: 10-50A
Max Surge Current: 60A/60S
Internal Resistance: 6.2mΩ

This product was added to our catalog on November 22, 2011.

Verified Owner
Saturday, Dec 14 2013 (about 3 years ago)
Reedy 550-SL Sensorless 4-Pole Brushless Motor (4000kV)
Good motor power....only in a slash 4x4 or the same light weight type. This motor hauls a** in my slash 4x4. Like a rocket. I initially bought it for my Tekno sct410 and it was...hmm....meh....had to gear it high but still somewhat lack oomph....So I got a different motor to try. Hobbywing sct pro combo 4000 kv and that hauled a**. That's another story. But going back to my slash oh man....this reedy 550sl is so powerful for a lightweight short course truck. Highly reconmended for lightweights. Not for the heavyweights scte or teknos. They require serious more power.)
Russell Thompson
Wednesday, Oct 16 2013 (about 4 years ago)
Reedy 550-SL Sensorless 4-Pole Brushless Motor (4000kV)
I have this running in my Axial Exo with the MMP. The first one smoked up as soon as power was applied. Warranty was AWESOME. I emailed them right away and the next day the had a new motor in the mail. It has great power but runs quite hot on 3s even geared right down.)
Patrick Littleton
Wednesday, Apr 18 2012 (about 5 years ago)
Reedy 550-SL Sensorless 4-Pole Brushless Motor (4000kV)
Very, very powerful--great upgrade for anyone looking to boost power in their SC104X4. Running mine with a Mamba Max Pro at the current time.)