Castle Creations Hydra X 8S Marine ESC, 010-0175-00

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Introducing the newest addition to the world of RC hobby boats, the HYDRA X 8S. With its sleek design and powerful performance, it will push RC boats to their limits for the ultimate thrill ride on the water!

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  • Input Voltage Range 2S-8S LiPo (33.6V max)
  • Sensorless, Sensored Only, SmartSense and Brushed Running Modes
  • Powerful Integrated 8A Peak Adjustable BEC (5.5V8.0V)
  • 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 aluminium case and potted in waterproof epoxy to protect the electronics and promote efficient heat transfer
  • Data logging capability to capture and record performance data from your vessel
  • 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)
  • Machined water-cooled heatsink with .17" water fittings.
  • Telemetry Compatible with S.BUS2 Telemetry Link and Futaba T4PX, T7PX and T7PXR transmitters
  • Optional smartphone-based programming with the B-LINK Bluetooth Adapter (sold separately) and Castle Link app available on Google Play or Apple App Store.
  • Proudly designed and manufactured in Olathe, KS USA and backed by Castle Creations' 1-year warranty
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Castle Creations Hydra X 8S Marine ESC, 010-0175-00

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Product Information

The HYDRA X 8S is based on Castle's popular and powerful Mamba Monster X 8S. They've removed the air cooled heatsink and added a water-cooled heatsink. The final touch is an aluminum top plate that gives it a sleek and polished appearance. Attached to the top plate are two .17" aluminum water fittings and uses standard 10-32 UNF threads. The HYDRA X 8S is the ultimate enhancement that propels high-performance monohulls, up to 36 inches in length, to new heights.

CRYO-DRIVE, Castle's proprietary breakthrough technology, integrates unique software to reduce heat and dramatically increase performance. Thousands of times per second, the Hydra X 8S software minimizes the amount of time the electrical components spend generating heat. The results are more power handling, cooler ESC temperatures and longer runtimes and ultra-high performance.

It's easy to dial in ESC settings, update ESC firmware and view data logs with Castle Link USB programming kit (coupon for USB adapter included with purchase) and a 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 is available with on-the-fly adjustments from a compatible transmitter via the Auxiliary wire. It's as easy as connecting the white signal wire to an open radio channel and enabling the feature in Castle Link by selecting what Auxiliary function is preferred.

What's in the box?

  • Hydra X 8S ESC with water fittings for 1/8" tubing

  • Castle Creations Decals

  • Coupon for free Castle Link USB

  • Hydra X 8S Quick Start Guide

Items Needed for Operation:

The Hydra X 8S requires the use of connectors designed for high-powered electric systems, rated for 120+ amps, such as Castle CC Bullet 6.5mm, CC Bullet 8.0mm, or 6.5mm Polarized Castle Connectors, soldered to the battery leads.


Application Guidelines:
RC Hobby boats up to 36" (Ideal for Proboat Impulse 32", Proboat Sonicwake 36", Traxxas Spartan, Traxxas M41 Catamaran)
Input Voltage Range:
MIN: 2S LiPo, MAX: 8S LiPo (33.6V)
Running Modes:
Sensorless, Brushed, Sensored Only, and SmartSense when paired with a Sensored Motor.
Water Cooling Fittings:
Two .17" fittings. Uses 10-32 UNF threads.
L: 69.5mm / W: 54.1mm / H: 24.7mm
Weight (w/wires):
155.5 grams / .34 lbs.
Data Logging:
Auxiliary Wire:
Minimum Input Voltage:
Maximum Input Voltage:
Sensored Capable:
Recon G6 Certified ESC:
ROAR Certified ESC:
Available, but disabled by default.
Available, but disabled by default.
On/Off Switch:
Yes, waterproof
Water cooling fittings
Two .17" fittings included. Uses 10-32 UNF threads.
Motor Connectors:
6.5mm female bullets on circuit board, matching 6.5mm male bullets for motor required (not included)
Items Needed for Operation:
The Hydra X 8S requires the use of connectors designed for 150+ amps continuous, such as Castle 6.5mm polarized or CC BULLET 8.0MM, QS8 8mm Anti Spark or QS10 10mm Anti Spark. You will also need 8mm male bullets for the motor connections.
Operating environment:
All weather conditions (See Operating Environment Considerations)
Fully programmable Castle feature set using Castle Link USB adapter (coupon for free link included in package) and freely downloadable Castle Link Windows software, or the Castle Link App and a B-LINK Bluetooth Adapter (sold separately).
Telemetry Link Capable:
Yes, with Castle Creations Telemetry Link for S.BUS2 and Futaba T4PX, T7PX, T7PXR, and 10PX transmitters.