Overview
MAD Runner3665 is a sensored brushless motor for RC cars, designed for 1/10 short course trucks and monster trucks. It uses a 4-pole rotor and features an IP67-rated sealed design for all-weather use.
Key Features
- Sensored brushless power system with quick response and stable high-speed operation
- Higher RPM and lower resistance design
- Imported bearings
- Compact and durable high-strength design: precision bearings, reinforced alloy shell, tough steel shaft
- Industrial-grade sensored waterproof connectors
- Efficient electromagnetic design: ultra-thin 0.2 mm silicon steel core, high-density heat-resistant windings, lower energy loss and cooler operation
- IP67 rated: fully sealed waterproof/dustproof design, built for harsh environments
Specifications
| Name | Runner3665 |
|---|---|
| KV options | 4000KV / 3300KV / 2500KV |
| Cells (by KV option) | 2S–3S / 2–3S / 2–4S |
| No-load current (by KV option) | <8.0A / <7.0A / <5.0A |
| Weight (by KV option) | 300.5 g / 302.3 g / 302.5 g |
| Numbers of poles | 4 poles |
| Bearings | Front (driving end): D13*d5*T4; Rear (wire outlet end): D11*d5*T5 |
| Outer diameter / Length | Ø37 mm (1.46 in) / L65.6 mm (2.09 in) |
| Shaft diameter / End length of shaft | Ø5 mm (0.2 in) / L16.5 mm (0.65 in) |
| Size tolerances | Length: 65.6 ±0.2; Shaft end length: 16.5 ±0.5 |
| Mounting | 6-M3 |
| Connector size | 3-Ø4.0 |
| Applicable to | Short course trucks, monster trucks |
| Ingress protection | IP67 rated |
Applications
- 1/10 short course trucks
- 1/10 monster trucks
For motor selection and compatibility questions (KV option, battery cells, gearing), contact support@rcdrone.top or visit https://rcdrone.top/.
Details

The MAD Runner 3665 sensored brushless motor features a finned metal can design and an IP67 rating noted on the product graphic.

The MAD Runner 3665 sensored brushless motor is pictured with its sensor lead and a finned ESC with pre-wired power leads for RC builds.

The MAD Runner 3665 sensored brushless motor features a reinforced alloy shell, steel shaft, and waterproof sensor connectors for reliable wiring.

The MAD Runner 3665 sensored brushless motor features a finned aluminum can, sensor lead, and sturdy output shaft for RC drivetrain builds.

The MAD Runner3665 sensored brushless motor highlights a 0.2mm silicon steel core and heat-resistant winding for reduced losses and improved efficiency.

The MAD Runner3665 sensored brushless motor features an IP67-rated sealed design for all-weather use.

Runner3665 motor specs list 4000KV, 3300KV, and 2500KV options with a Ø37mm x 65.6mm body and 5mm shaft for RC short course, trucks, and monster builds.

The MAD Runner3665 sensored brushless motor uses a 37 mm can diameter with a 65.6 mm body length and a 6×M3 mounting pattern for straightforward fitment.
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