This is the Castle Creations Mamba Monster X 8S 1/6 Brushless ESC

With the introduction of the MAMBA MONSTER X 8S any R/C vehicle weighing up to 25lbs, and running up to 8S LiPo, is fair game. Drive fearlessly and punch that throttle! The MAMBA MONSTER X 8S utilizes Castle’s breakthrough technology CRYO-DRIVE™. By reducing the rate at which the ESC heats up and removing heat more efficiently, your setup will be able to handle higher gear ratios, in heavier vehicles, with longer runs. These software advancements work in parallel with a unique open housing design to allow increased directional airflow to cool critical components. With the integration of a 40mm cooling fan and a forged elliptical fin heatsink, the design maximizes airflow throughout the system, taking thermal performance to a whole new level.
High-performance demands high quality and this ESC was designed with durability in mind. Constructed around a robust aluminum casing, the epoxy potting guarantees protection around the circuitry and ensures all-weather use. Mamba Monster X 8S is a workhorse, it will dominate in the harshest of environments.

You can easily optimize the ESC for any driving condition, from rugged terrain to smooth pavement to the perils of rock and gravel. Create, save and download setup profiles through the Castle Link Programming Suite on your Windows™ PC, or wirelessly with the convenience of the new B-Link™ Bluetooth™ Adapter and Castle Link app for Android or iOS.

Additional tuning flexibility awaits you with on-the-fly adjustments from your transmitter via the Auxiliary wire. Simply connect the white signal wire to an open radio channel, and enable the feature in Castle Link by selecting what Auxiliary function you would like to use. Access programming parameters such as Torque Control, Max Brake or Rock Race Mode. Optimize your vehicle for any racing or bashing application you can imagine!

When paired with a Castle 4-POLE 12-SLOT SENSORED MOTOR such as the 2028-800KV or 1515-2200KV, users with heavy, high speed rigs will experience controllable low-end ranges without sacrificing power, punch or speed. SmartSense™ mode uses the motor’s sensors to start the motor to provide smooth starts, excellent torque, and low-speed drivability. Once the motor is spinning, it seamlessly transitions to Castle’s ultra-efficient sensorless mode. You’ll put more power to the ground, where it should be, instead of wasting it through raw heat and RPMs.

Whether you are burning out, dropping the hammer, trigger happy, powering out, on-the rocks, off-the-rocks, wheeling or mud bogging - MAMBA MONSTER X 8S is ready to test the limits of your R/C car or truck.

Features:
Input Voltage Range 2S-8S LiPo
Sensorless, Sensored and SmartSense™ Running Modes
Powerful Integrated 8A Peak Adjustable BEC (5.25V-8.0V)
CRYO-DRIVE™ Technology minimizes the amount of time the ESC’s electrical components spend generating heat, resulting in improved thermal performance during partial throttle operation where the majority of driving occurs
ESC is housed in a rugged CNC aluminum case and potted in waterproof epoxy to protect the electronics and promote efficient heat transfer
Premium forged heatsink with elliptical fins for superior air flow and increased heat dissipation
Oversized factory equipped thermally controlled 40MM cooling fan
Compatible with S.BUS2 Telemetry Link and Futaba T4PX and T7PX transmitters
Waterproof design for all weather conditions
Data logging capability to capture and record performance data from your vehicle
Auxiliary wire functionality for "on-the-fly" adjustments using your transmitter
Audible alerts for easy diagnosis of common issues such as motor-over-temperature and low-voltage cutoff
Convenient transmitter programming for six common adjustable settings including cutoff voltage and drag brake
Castle Link USB programming kit (coupon included with purchase)
Optional smartphone-based programming with the B-LINK™ Bluetooth Adapter (sold separately and Castle Link all available on Google Play or Apple App Store
Proudly designed and manufactured in Olathe, KS USA and backed by Castle Creations' 1-year warranty

Specifications:
Battery Input Lead: None
BEC: Yes
BEC Maximum Burst Current: 8A Peak
BEC Type: Adjustable
BEC Voltage: Adjustable, 5.5V default
Brakes: Proportional
Connector Type: 6.5mm Bullet
Input Voltage: 7.4 - 33.6V (2S - 8S)
Low-Voltage Cutoff Programmable: Yes
Overload Protection: Yes
Product Height: 1.8" (47mm)
Product Length: 2.7" (69.5mm)
Product Weight: 5.75oz (163g)
Product Width: 2.1" (54.1mm)
Programmable: Yes

Includes:
(1) 1/6 Mamba Monster X 8S 33.6V Waterproof ESC 8A Peak BEC
(1) Product Manual