Reedy Sonic 540-M3 Motor 4.5 Modified

Part # 266
Pkg Qty 1
UPC 784695002661
MSRP $149.00
Online $89.99
  • CNC machined, lightweight 3-piece can
  • Aluminum end cap
  • Low-resistance, silver-plated solder tabs
  • Optimized air cooling
  • Dual-precision ball bearings
  • Balanced rotor
  • High-strength magnet
  • Adjustable timing
  • Completely rebuildable
  • Competition proven
  • Built to ROAR/EFRA/IFMAR specs

The all-new Sonic 540-M3 Competition Brushless Motor

For the last 12 months, the Reedy development team has been working behind the scenes utilizing a combination of new ideas and proven concepts to create the all-new Sonic 540-M3 Competition Brushless Motor.

On the outside, the 540-M3 appears very similar to the Mach 2, but look closely and you will realize that nothing has been carried over from the previous model. A 3-piece CNC machined can reduces weight while improving airflow, component fit, and bearing alignment. Heavy-duty silver-plated solder tabs are not only thicker to reduce resistance, but are also cupped to aid soldering and well supported to prevent internal connections from fatiguing over time.

Inside, changes are less obvious but result in huge performance gains. Sonic 540-M3 Spec motors walk the edge of legality in exchange for maximum power output and RPM thanks to an all-new stator design, pure copper magnet wire, and low-resistance collector rings. Available short-stack versions suit 1S powered pan cars and under the right circumstances can create a power advantage in 2S powered buggies, trucks, and touring cars.

Unlike Spec class racing, Modified is about controlling power. Sonic motors have always been known for their linear power delivery and the 540-M3 does not disappoint. A new stator design improves mid-range feel which both on-and off-road racers will appreciate.

A balanced, high-strength sintered rotor provides powerful, fade-free performance thanks to improved manufacturing processes. To fine-tune for specific applications and tracks, a variety of optional rotors are available. Lastly, larger precision stainless steel ball bearings have been fitted to accommodate high RPM loads with improved reliability.

Visit for a complete list of tuning rotors, replacement/option parts and detailed specifications.

Cells:1-2S LiPo
Shaft Diameter:3.15mm
Part #: 280
MSRP: $3.99
In Stock
Part #: 277
MSRP: $13.99
In Stock
Team Driver Setup Sheets:
Download Driver Track Date
Download Rick Hohwart 2019 Protoform Cup 09/22/2019
TC7.2 - High/med grip asphalt - 90F
Download Rick Hohwart CTS4 05/05/2019
TC7.2 - Modified - Med grip asphalt - 75F
Download Rick Hohwart CTS2 Round 5 07/23/2017
TC7.1 - Modified - Med/high grip asphalt - 103F
Download Rick Hohwart 2017 Reedy TC Race of Champions 05/28/2017
TC7.1 - Medium grip asphalt - 75F
Download Chris Grainger UK Nationals 12/04/2016
AE TC7.1 - Modified - Asphalt, medium grip - Dry