Reedy Sonic 540-SP5 Spec Brushless Motor (17.5T) (ONLINE ORDER ONLY)

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

• Part Number: ASC27480
• Motor Type: Sensored Brushless
• Motor Size: 540
• Turn Rating: 17.5T
• 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 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.