Overview
The Reedy Sonic 540-SP5 21.5T Spec Brushless Motor is designed for competitive 1/10 scale spec racing classes where smooth drivability, efficiency, and consistency are paramount. As part of Reedy's SP5 motor platform, the 21.5T variant emphasizes controllable power delivery and reduced thermal fade, making it ideal for beginner and spec-oriented racing categories.
Built to ROAR specifications, this motor is widely used in spec touring car and spec off-road classes. The higher turn rating provides the most controllable power band in the SP5 lineup, perfect for developing skills while still delivering competitive performance.
Key Features
- Custom high-power stator design for stable torque
- CNC-machined aluminum housing with optimized cooling
- Low-resistance solder tabs and oversized collector ring
- Balanced rotor with high-strength magnet
- Dual precision stainless steel ball bearings
- Aluminum end cap with adjustable timing
- Sensored design for smooth throttle response
- Completely rebuildable
- Built to ROAR specifications
Performance Benefits
- Most controllable power in SP5 lineup
- Heat-transfer epoxy minimizes fade
- Efficient design for cooler operation
- Adjustable timing for fine-tuning
- Ideal for beginner and spec racers
- Competition-proven reliability
Usage Notes
- Best suited for 1/10-scale touring cars and off-road vehicles
- Compatible with sensored brushless ESCs
- Input Voltage: 1-2S LiPo
- Ideal for ROAR-legal 21.5T spec racing classes
- Excellent for beginners developing racing skills
Technical Specs
-
Part Number: ASC27479
-
Motor Type: Sensored Brushless
-
Motor Size: 540
-
Turn Rating: 21.5T
-
Input Voltage: 1-2S LiPo
-
Diameter: 35.9mm
-
Length: 52.5mm
-
Shaft Diameter: 3.15mm
-
Weight: 147-151g
What's Included
- (1) Reedy Sonic 540-SP5 21.5T Sensored Brushless Motor
Summary
Master spec racing with the Reedy Sonic 540-SP5 21.5T motor. ROAR-approved design delivers smooth, controllable power ideal for beginners and spec classes while maintaining competition-quality performance.
