Overview
The Surpass Hobby KK 3665 is a brushless motor for 1/10 scale RC drift, racing, and off-road car builds, designed to deliver strong torque and stable high-RPM performance on 2S–3S setups. It uses a 4-pole, 12-slot high-torque design and 4.0mm gold bullet connectors for low-resistance power delivery.
Key Features
- KK waterproof series brushless motor for RC car applications
- KV options: 1800KV / 2300KV / 2900KV / 3100KV / 3500KV
- CNC-machined 6061-T6 aluminum heatsink can
- High-purity copper windings for efficient power conversion
- Precision-balanced rotor for smooth operation and reliability
- Stator laminations: 0.35mm
- High-RPM ABEC5 oversized bearings
- 4.0mm gold connectors
Specifications
| Brand | SURPASS HOBBY |
| Series | KK |
| Model | 3665 |
| Motor type | Brushless (4-pole, 12-slot) |
| KV (RPM/Volt) | 1800KV / 2300KV / 2900KV / 3100KV / 3500KV (optional) |
| Power | 1400 W |
| Max RPM | 50000 |
| Max current | 95 A |
| Motor diameter | 36 mm |
| Motor length | 65 mm |
| Shaft diameter | 5 mm |
| Shaft length | 17 mm |
| Connector | 4.0mm gold |
| Motor weight (NW) | 245 g |
| Package size | 110 x 68 x 42 mm |
| Package weight (GW) | 278 g |
What's Included
- 1 x SURPASS HOBBY KK 3665 brushless motor
- 1 x English manual
Applications
- 1/10 scale RC drift cars
- 1/10 scale RC touring/racing cars
- 1/10 scale RC off-road car builds where a 3665-size motor is supported
For selection help (KV choice, 2S/3S setup guidance, and basic fitment questions), contact [email protected] or visit https://rcdrone.top/.
Details

Built for 1/10 RC drift, touring, and off-road builds, the KK 3665 combines strong torque with stable high-RPM performance on 2S–3S setups.

A full spec table and wiring reference help confirm the right KV option and fitment for your chassis and ESC.

36mm diameter and 65mm can length with a 5mm shaft for common 1/10-scale motor mounts and pinions that support 3665 size.
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