Overview
Surpass Hobby KK series waterproof brushless ESC for car applications, offered in KK120A and KK150A versions for 1/8 scale RC cars. It is designed for sensorless brushless motors and supports 3–6S LiPo (or 9–18 cell NiMH) power setups.
Key Features
- Waterproof and dust-proof design for all-weather racing use
- Designed for RC cars with strong start-up response, acceleration, and linear throttle feel
- Compatible with sensorless brushless motors
- Cooling-focused structure for heat dissipation
- Protection functions include low-voltage cut-off protection
- Battery connector options: T Plug or XT60 Plug (variant-dependent)
- Standard RC connections: 3 motor wires, receiver lead, and external switch
Note: After running in water, clean and dry the ESC and connectors promptly to help prevent connector rust.
Specifications
| Parameter | KK120A | KK150A |
|---|---|---|
| Model | KK 120A | KK 150A |
| Item Number | KS-300003-06 | KS-300003-07 |
| Continuous / Burst Current | 120A / 600A | 150A / 720A |
| Motor Type | Sensorless Brushless Motor | |
| Battery | 3–6 cells LiPo / 9–18 cells NiMH | |
| BEC Output | 6.1V / 3A (switch mode) | 6.1V or 7.4V / 3A (switch mode) |
| Suitable Car | 1/8 car | |
| Resistance | 0.00035 ohm | 0.00030 ohm |
| Dimensions | 160 x 100 x 62 mm | 160 x 100 x 62 mm |
| Weight | 136 g | 148 g |
| Battery Plug Options (by variant) | T Plug or XT60 Plug | |
Applications
- 1/8 scale RC on-road cars
- 1/8 scale off-road buggy and monster platforms
For product selection help (KK120A vs KK150A, and T Plug vs XT60 Plug variants), contact [email protected] or visit https://rcdrone.top/.
Details

KK series waterproof, dust-proof brushless ESCs for 1/8 RC cars, built for responsive acceleration and consistent throttle feel in all-weather runs.


Choose the battery connector that matches your setup (T plug or XT60), with standard motor, receiver, and switch leads for straightforward installation.

KK120A and KK150A versions support 3–6S LiPo power and include low-voltage protection plus a switch-mode BEC for reliable radio performance.
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