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Associated Reedy Sonic 540-Sp5 21.5 Turn Brushless Motor (Associated 27479 | ASC27479)

Model: Associated 27479
Dist. #: ASC27479   SKU: ASC27479

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List Price:  $149.00
Price:  $123.99
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Updated on Sep 21, 2025 10:24:15 PM

Reedy Sonic 540-Sp5 21.5 Turn Brushless Motor...
Reedy Sonic 540-SP5 21.5 Turn Brushless Motor

Reedy's Sonic SP5 stock motors are now offered! Including a special style, Reedy's Sonic SP5 includes many features that will put it at the top of the pyramid when it comes to stock motor performance.

The unbelievable performance of the SP5 starts at the heart of the motor--the stator. Created internal, the stator's profile is meant to accomplish maximum torque and power output without sacrificing RPM. Premium copper magnet wire, sized to the maximum that the rules permit and wound with care to keep resistance near the legal minimum, is treated with heat transfer epoxy to dissipate heat and reduce internal temperatures resulting in less fade over the course of the race. A large collector ring not only dissipates heat, however in combination with thick solder tabs, reduces resistance and power loss.

A balanced rotor features a high-strength magnet that makes the most of dimensional rules to produce fade-free power with maximum efficiency. The rotor is supported by accuracy stainless-steel ball bearings to accommodate high RPM loads with extraordinary effectiveness and dependability. Like all Reedy Sonic motors, a top quality sensor board complete the motor's interior.

Externally, the SP5 utilizes a light-weight two-piece CNC machined aluminum housing with an aluminum endcap and timing adjustability to accommodate fine-tuning for specific applications. This light-weight plan is a welcome way to enhance car handling while enhancing chassis tuning flexibility.


Features:
  • CNC-machined housing with enhanced air cooling
  • Custom-made high-power stator style
  • Low-resistance solder tabs and collector ring
  • Balanced rotor with high-strength magnet
  • Dual accuracy ball bearings
  • Aluminum end cap with adjustable timing
  • Completely rebuildable
  • Competitors tested
  • Built to ROAR specifications


Requirements:
  • Cells: 1-2S LiPo
  • Size (mm): 35.9
  • Length (mm): 52.5
  • Shaft Dia. (mm): 3.15
  • Weight (g): 147-151



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