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Reedy Sonic 540 M4 Brushless Motor 7.0T Modified
Brand: Reedy
Part No: AS27442
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The Reedy Sonic 540 M4 Brushless Motor 7.0T Modified (AS27442) is a competition-proven 1:10 class motor that evolves the much-loved M3 with targeted refinements. It retains the linear powerband and strong mid-range feel associated with Reedy’s modified range while introducing engineering updates for improved precision and handling.
Key to the M4’s redesign is the relocation of the inner bearing into the can, rather than the sensor assembly. This more accurately aligns the rotor within the magnetic field and helps reduce noise and vibration. Externally, a shortened can centralises weight within the chassis and contributes to a 5–10 g reduction overall.
A balanced, high-strength rotor delivers powerful, fade-free performance, with optional rotors available to fine-tune for specific tracks and conditions. Precision stainless steel ball bearings support high RPM loads, while adjustable timing and a rebuildable architecture provide the tuning scope and serviceability demanded by serious racers.
Key Features
- CNC-machined lightweight can
- Aluminium end cap
- Lightweight design
- Low-resistance, silver-plated solder tabs
- Optimised air cooling
- Dual precision stainless steel ball bearings
- Balanced rotor with high-strength magnet
- Adjustable timing
- Completely rebuildable
- Competition proven
- Built to ROAR/EFRA/IFMAR specs
Design Improvements
- Inner bearing integrated into the can for improved rotor alignment
- Reduced noise and vibration
- Shortened can for more centralised chassis weight
- Overall weight reduction of approximately 5–10 g
Specifications
- Cells: 1–2S LiPo
- Diameter: 35.9 mm
- Length: 50.3 mm
- Shaft Diameter: 3.15 mm
- Weight: 160–170 g
Secured by Stripe
REEDY SONIC 540 M4 BRUSHLESS MOTOR 7.0T MODIFIED
After months of development, Reedy is proud to announce the release of the Sonic 540-M4 Competition 1:10 Brushless Motor!
Internally, the 540-M4 is very similar to that of the 540-M3 that it replaces - it produces the same linear powerband and excellent mid-range feel that have become synonymous with Reedy’s modified motors. However, changes can be good when they serve a purpose. In the case of the 540-M4, the inner bearing has been moved so that it is part of the can instead of the sensor assembly, which more precisely aligns the rotor within the magnetic field while reducing noise and vibration.
Externally, the motor has been shortened, which results in more centralized weight distribution within the chassis. The reduced length, combined with improvements to the can design, results in a 5-10g reduction in weight.
A balanced, high-strength rotor provides powerful fade-free performance. A variety of optional rotors are available to fine-tune for specific applications and tracks. Precision stainless steel ball bearings have been fitted to reliably accommodate high RPM loads.
Features
- CNC-machined lightweight can
- Aluminum end cap
- Lightweight design
- 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
Specifications
Cells: 1-2S LiPo
Diameter (mm): 35.9
Length (mm): 50.3
Shaft Diameter (mm): 3.15
Weight (g): 160-170
Key Info:
- Brand: Reedy
- Part No: AS27442
- Barcode: 784695274426
- Fitment: Option Part
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