Overview
Surpass Hobby KK series waterproof brushless ESCs for RC cars are available in 25A (KK25A) and 35A (KK35A) versions. They are designed for sensorless brushless motors and focus on smooth start-up, strong acceleration, and linear throttle response for on-road and off-road driving.
Key Features
- Waterproof and dust-proof design for all-weather races
- Compatible with sensorless brushless motors
- Strong current capability with aluminum heat sink for heat dissipation
- Protection functions: low voltage cut-off (lithium or nickel battery), over-heat protection, throttle signal loss protection, motor blocked protection
- Supports programming with a pocket-sized program card
- External switch included
Note: Please uninstall the cooling fan before using the ESC in water. Clean and dry it soon after use to avoid connector corrosion.
Need help selecting the right version and plug (T Plug or XT60) for a specific RC car setup? Contact [email protected] or visit https://rcdrone.top/.
Specifications
| Parameter | KK25A | KK35A |
|---|---|---|
| Item number | KS-300003-01 | KS-300003-02 |
| Continuous/Burst current | 25A/100A | 35A/120A |
| Motor type | Sensorless brushless motor | |
| Battery | 2 cells Lipo / 4~6 cells NiMH | 2~3 cells Lipo / 4~9 cells NiMH |
| BEC output | 5.0V/2A (analog mode) | |
| Resistance | 0.0014ohm | 0.0007ohm |
| Suitable car scale | 1/20, 1/18, 1/16 car | 1/16, 1/14 car |
| Dimensions | 40 x 32 x 15 | 40 x 32 x 20 |
| Weight | 33g | 37g |
| Recommended motor limits (2S Lipo or 6 cells NiMH) |
On-road: 24XX-size or smaller motor with KV <7200 Off-road/Buggy/Monster: 24XX-size or smaller motor with KV <4800 |
On-road: 28XX-size or smaller motor with KV <6000 Off-road/Buggy/Monster: 28XX-size or smaller motor with KV <4000 |
| Recommended motor limits (3S Lipo or 9 cells NiMH) | — |
On-road: 28XX-size or smaller motor with KV <4000 Off-road/Buggy/Monster: 28XX-size or smaller motor with KV <3000 |
Options
- 25A ESC (T Plug)
- 25A ESC (XT60 Plug)
- 35A ESC (T Plug)
- 35A ESC (XT60 Plug)
Connections
- Battery connector options: T Plug or XT60 Plug (variant dependent)
- Three-phase output wires connect to motor
- Receiver lead connects to receiver
- External switch
Details



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