Shenzhen ZTW Model Science&Technology Co.,ltd
| Continuous Current | 120A |
| BEC Output | 5.0,6.0V adjustable/8A |
| Size | 89*45*13mm |
| Burst Current | 140A |
| Programming Way | Transmitter/LCD Program Card G2 |
| Model Name | Shark 120A SBEC G2 |
| Input Voltage | 2-6S LiPo/5-18NC |
| Weight | 105g |
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Product Specification
| Continuous Current | 120A | BEC Output | 5.0,6.0V adjustable/8A |
| Size | 89*45*13mm | Burst Current | 140A |
| Programming Way | Transmitter/LCD Program Card G2 | Model Name | Shark 120A SBEC G2 |
| Input Voltage | 2-6S LiPo/5-18NC | Weight | 105g |
| High Light | 120A ESC ZTW Shark G2 ，RC Boats 120A Speed Controller ，ESC ZTW Shark G2 4S | ||
ZTW Shark G2 120A 32-Bit Waterproof ESC 4-6S with Water Cooling and 8A SBEC for Large RC Boats and Heavy Light Underwater Thrusters
32-Bit Flagship 4-6S Boat ESC
The Shark G2 120A is the most powerful model in the Shark G2 series, pairing a 32-bit microprocessor with 120A continuous output for large RC boats, high-performance catamarans, and heavy lightweight underwater thruster systems.
120A Continuous / 140A Burst on 4-6S
New-generation MOSFETs deliver low heat and withstand extreme instant current surges with high reliability. 120A sustained and 140A peak on 4-6S LiPo provides maximum power for the largest 6S-compatible boat motors and heavy subsea thrusters.
Splash-Proof + Flat Water Cooling
Waterproof-glued construction handles heavy spray and humidity, while the 32mm flat water-cooling system efficiently manages the thermal load of sustained 120A operation — essential for large boats and high-power underwater propulsion.
8A High-Power Adjustable SBEC
The 5.0/6.0V switching BEC supplies 8A continuous (15A burst), powering multiple high-torque servos, pumps, lights, and auxiliary electronics — eliminating the need for an external UBEC even on complex large-boat setups.
Synchronous Rectification for Maximum Efficiency
Synchronous rectification significantly reduces ESC heating at extreme currents, improving driving efficiency and conserving battery energy — critical for large boats and heavy thrusters where every watt matters.
Forward/Reverse & Isolated Board Architecture
"Forward Only" for racing performance, "Forward and Backward" for scale operation and docking. The separate control-board/power-board design enhances anti-interference and reliability by thermally isolating the control circuit from the high-power stage.
Protection & Programming
Five-layer protection: start-up, over-heat, LVC, phase loss, signal loss. Configure via transmitter, LCD Program Card G2, or optional Phone App (adapter required). 10-gauge power wires. At 89×45×13mm and 105g, it remains remarkably compact for a 120A 6S ESC.
| Specifications | Shark 20A SBEC G2 | Shark 30A SBEC G2 | Shark 40A SBEC G2 | Shark 50A SBEC G2 | Shark 60A SBEC G2 | Shark 80A SBEC G2 | Shark 100A SBEC G2 | Shark 120A SBEC G2 |
|---|---|---|---|---|---|---|---|---|
| Continuous Current | 20A | 30A | 40A | 50A | 60A | 80A | 100A | 120A |
| Burst Current | 30A | 40A | 55A | 65A | 80A | 100A | 120A | 140A |
| Input Voltage | 2-4S LiPo | 2-4S LiPo | 2-4S LiPo | 2-4S LiPo | 2-6S LiPo | 4-6S LiPo | 4-6S LiPo | 4-6S LiPo |
| BEC Output | 5.0/6.0V Adj. / 4A | 5.0/6.0V Adj. / 4A | 5.0/6.0V Adj. / 4A | 5.0/6.0V Adj. / 4A | 5.0/6.0V Adj. / 8A | 5.0/6.0V Adj. / 8A | 5.0/6.0V Adj. / 8A | 5.0/6.0V Adj. / 8A |
| Water Cooling | Yes (27mm Tube) | Yes (27mm Tube) | Yes (27mm Tube) | Yes (27mm Tube) | Yes (27mm Tube) | Yes (32mm Tube) | Yes (32mm Tube) | Yes (32mm Tube) |
| Programming | Tx / LCD Card G2 | Tx / LCD Card G2 | Tx / LCD Card G2 | Tx / LCD Card G2 | Tx / LCD Card G2 | Tx / LCD Card G2 | Tx / LCD Card G2 | Tx / LCD Card G2 |
| Firmware Upgrade | Not Supported | Not Supported | Not Supported | Not Supported | Not Supported | Not Supported | Not Supported | Not Supported |
| Power Wire | 18AWG | 16AWG | 14AWG | 14AWG | 14AWG | 12AWG | 10AWG | 10AWG |
| Motor Wire | 18AWG | 16AWG | 14AWG | 14AWG | 14AWG | 12AWG | 12AWG | 12AWG |
| Battery Plug | XT60 | XT60 | XT60 | XT60 | XT60 | XT90 | XT90 | XT90 |
| Motor Bullet | 3.5mm Gold | 3.5mm Gold | 3.5mm Gold | 3.5mm Gold | 3.5mm Gold | 4.0mm Gold | 4.0mm Gold | 4.0mm Gold |
| Size (L×W×H) | 60×33×10mm | 60×33×10mm | 69×33×9mm | 69×33×9mm | 70×41×12mm | 89×45×13mm | 89×45×13mm | 89×45×13mm |
| Weight | 32g | 36g | 45g | 45g | 65g | 98g | 105g | 105g |
Company Details
Business Type:
Manufacturer
Year Established:
2007
Total Annual:
>20 Million
Employee Number:
100~500
Ecer Certification：
Verified Supplier
About ZTW Shenzhen ZTW Model Science & Technology Co., Ltd. is a high-tech enterprise specializing in the R&D, manufacturing, and sales of brushless electronic speed controllers (ESCs) and propulsion systems for RC models, UAVs, and industrial applications. Since our founding in 2007, we hav... About ZTW Shenzhen ZTW Model Science & Technology Co., Ltd. is a high-tech enterprise specializing in the R&D, manufacturing, and sales of brushless electronic speed controllers (ESCs) and propulsion systems for RC models, UAVs, and industrial applications. Since our founding in 2007, we hav...
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