Surpass Hobby KK 3674 Waterproof Sensorless Brushless Motor 1900/2250/2500KV for 1/8 1/10 RC Cars
Surpass Hobby KK 3674 Waterproof Sensorless Brushless Motor 1900/2250/2500KV for 1/8 1/10 RC Cars
Surpass Hobby
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Overview
The Surpass Hobby KK 3674 is a waterproof, sensorless brushless motor designed for 1/8 and 1/10 RC cars. It features a CNC-machined 6061-T6 aluminum heatsink can, high-purity copper windings, and a precision-balanced rotor for smooth, efficient power delivery.
Key Features
- 4-pole, 12-slot high-torque motor design
- CNC-machined 6061-T6 aluminum heatsink can
- High-purity copper windings to maximize efficiency
- High-RPM ABEC5 oversized bearings
- Precision-balanced rotor for smooth operation and reliable high RPM
- 0.35 mm stator laminations
- Removable/replaceable rotor
- 4.0 mm gold-plated connectors
Specifications
| Brand | SURPASS HOBBY |
| Series | KK |
| Motor Size | 3674 |
| KV Options | 1900KV / 2250KV / 2500KV |
| Watts | 1800 W |
| Max Voltage | <22.2V |
| Max Current | 80 A |
| Max RPM | 50000 |
| Rotor Poles | 4 |
| Motor Diameter | 35.5 mm |
| Motor Length | 73 mm |
| Shaft Diameter | 5.0 mm |
| Shaft Length | 17 mm |
| Connector | 4.0 mm gold-plated |
| Motor Weight | 298 g |
ESC Specifications (when selecting 120A ESC Combo)
| ESC Model | KK 120A ESC |
| Continuous/Burst Current | 120A/600A |
| Motor Type | Sensorless brushless motor |
| Battery | 3-6S LiPo / 9-18 cells NiMH |
| BEC Output | 6.1V/3A (switch mode) |
Available Options
- 3674 1900KV Motor
- 3674 2250KV Motor
- 3674 2500KV Motor
- 3674 1900KV Motor + 120A ESC Combo
- 3674 2250KV Motor + 120A ESC Combo
- 3674 2500KV Motor + 120A ESC Combo
- KK Programming Card
Applications
- 1/8 and 1/10 electric RC cars requiring a 3674-size sensorless brushless motor
- RC racing and off-road builds where waterproof electronics are preferred
If help is needed choosing the right KV option or combo for a specific RC car setup, contact [email protected] or visit https://rcdrone.top/.
Details
Choose 1900KV, 2250KV, or 2500KV to match your 1/8 or 1/10 RC car gearing and battery setup.
Combo options bundle the 3674 motor with the KK 120A ESC for a clean, ready-to-wire power system.
A CNC-machined aluminum heatsink can and 4.0mm gold-plated connectors support efficient, reliable power delivery.
High-purity copper windings and a precision-balanced rotor are built for smooth RPM and strong torque under load.
Install planning is easier with the detailed size drawing and fitment measurements for 3674 motor mounts.
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