Overview
The Reedy Sonic 540-SP5 17.5T Spec Brushless Motor is engineered for competitive 1/10 scale spec and stock racing classes where drivability, efficiency, and consistency are critical. As part of Reedy's SP5 motor platform, this motor features a fully redesigned internal architecture focused on maximizing torque, minimizing performance fade, and maintaining smooth power delivery throughout a race.
Built to ROAR specifications, the 17.5T SP5 is a top choice for spec touring car, buggy, stadium truck, and short-course racing. The lower turn rating provides a more controllable power band, making it excellent for spec classes and drivers developing their skills.
Key Features
- Custom high-power stator design optimized for 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
- Strong low-end torque without sacrificing RPM
- Heat-transfer epoxy reduces fade over long mains
- Low-resistance design maximizes efficiency
- Adjustable timing for track-specific tuning
- Controllable power band for spec racing
- Competition-proven reliability
Usage Notes
- Best suited for 1/10-scale touring cars, buggies, trucks, and short course
- Compatible with sensored brushless ESCs
- Input Voltage: 1-2S LiPo
- Ideal for ROAR-legal 17.5T spec racing classes
- Excellent for controlled-power racing categories
Technical Specs
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Part Number: ASC27480
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Motor Type: Sensored Brushless
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Motor Size: 540
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Turn Rating: 17.5T
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Input Voltage: 1-2S LiPo
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Diameter: 35.9mm
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Length: 52.5mm
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Shaft Diameter: 3.15mm
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Weight: 147-151g
What's Included
- (1) Reedy Sonic 540-SP5 17.5T Sensored Brushless Motor
Summary
Excel in spec racing with the Reedy Sonic 540-SP5 17.5T motor. ROAR-approved design delivers controllable power, fade-free performance, and consistent results for 1/10-scale spec racing competition.
