Parts/Electric power/Brushless motors/Ruddog RP542 540 Sensored Brushless Motor (7.0T)
Ruddog RP542 540 Sensored Brushless Motor (7.0T)
Ruddog

Ruddog RP542 540 Sensored Brushless Motor (7.0T)

Part # RDGRP-04535.0(1)
Where to buy
$104.39
AMain Hobbies
Seen Oct 12, 2026
$104.39Buy
Prices are as last seen at the store; stock is not tracked.

About this part

The Ruddog RP542 Modified 540 Sensored Brushless Motor features a revised stack design to improve drivability, and a high-precision sensor to increase performance and efficiency. The Ruddog design team has gone to great lengths to reduce operating temperatures, adding large openings in the housing to lower the weight and ensure optimum air flow, while a ribbed stator collector ring is used to improve heat dissipation. Optimized rotors have been selected specific to the application, with modified motors using a 12.1x5x24.5mm rotor.

Features:
  • RUDDOG Racing competition motors 
  • Redesigned stack for improved drivability
  • High-precision sensor unit 
  • Light-weight motor housing with large openings for increased air flow 
  • Ribbed stator collector ring for better heat dissipation 
  • Specific rotors for modified racing 
  • Clearly visible motor winding number 
Specifications:
Turn Rating: 7.0 Turns
Dimensions: 35.9x51.6mm
Weight: 164g (approx)
Ball Bearing Type: High Quality Steel Bearings
Spare Part Ball Bearings: RDGRP-0148 RP540 Ball Bearing Set
Rotor: RUDDOG Racing RP542 12.1x5x24.5mm Modified Rotor

Reviews5.0 · 1 review

Alex RiziVerified owneron Ruddog RP542 540 Sensored Brushless Motor (7.0T)

Wow that motor is insane for the price I paid ( it was on special ) The motor is super smooth at the beginning of the throttle and then Rips like a beast (But still controllable) I played with around 7000hz and 8000hz for drive frequency and ended with 7000hz since it packed more torque , On B6.2D I ended up with 21T with the 78T spur gear (the track is small where I run) I will also test 20T the next time I go practice and race. The Ruddog RP542 is really good quality for the price you pay. The motor never got higher than 115 F after a 5 minutes qualifier or race. The Friend I race with who's got a Hobbywing 7.5T kept screaming at me when we where racing down the straight ( He had no chance the Ruddog has so much more RPM it's not even close) . This thing is a keeper in my arsenal of motors for 2wd racing. Hope it will last a long time. Thanks A-main (update September 2024) the motor is still a beast after more tuning with the esc and the car 2wd I needed to gear down to 20T and depending on the track I might even try 19T , this thing as so much RPM compared to other motors it's insane. I think you can use more turns for your selection of Ruddog R542 motors and still be happy. I still highly recommended it. (update February 2026) This motor is one hell of motor for 2wd buggy mod , Still in my 2wd buggy and having so much fun with it. I never used it in my stadium truck but I Think it would also be awesome for this class.

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