Skip to product information
Castle Creations Hydra X 8S Waterproof Brushless Marine ESC - 33.6V / 8A Adjustable BEC for RC Boats up to 36"
$299.95
Reliable shipping
Flexible returns
Overview
The Castle Creations Hydra X 8S (010-0175-00) is a high-voltage, water-cooled brushless marine ESC engineered for serious RC boat builders. Based on the proven Mamba Monster X 8S platform, the Hydra X 8S swaps the air-cooled heatsink for a precision-machined water-cooled heatsink and aluminum top plate, delivering superior thermal control during sustained high-load operation.
Supporting up to 8S LiPo (33.6V), the Hydra X 8S is purpose-built to push high-performance monohull boats up to approximately 36 inches to their absolute limits. Castle's CRYO-DRIVE technology, adjustable BEC, data logging, and telemetry readiness make this one of the most refined marine ESCs available.
Housed in a rugged CNC-aluminum case and fully potted in waterproof epoxy, the Hydra X 8S is ready for marine duty straight out of the box. Integrated 0.17" aluminum water fittings (10-32 UNF threads) connect easily to standard 1/8" cooling tubing.
Key Features
- High-voltage waterproof brushless marine ESC
- 2S-8S LiPo input (33.6V max)
- CRYO-DRIVE thermal management technology
- Adjustable 8A peak BEC (5.5V-8.0V)
- Sensorless, SmartSense, Sensored Only, and Brushed running modes
- Machined water-cooled heatsink with aluminum top plate
- 0.17" aluminum water fittings (10-32 UNF threads)
- Data logging for performance analysis
- Telemetry-ready (S.BUS2 / Futaba 4PX, 7PX, 7PXR, 10PX)
- Auxiliary wire for on-the-fly transmitter tuning
- Audible alerts for diagnostics
- B-Link 2 Bluetooth programming compatible
- Genuine Castle Creations marine ESC, made in Olathe, KS USA
Performance Benefits
- Active water cooling sustains performance during long runs
- CRYO-DRIVE cuts heat at partial throttle for cooler operation
- Adjustable BEC supports a wide range of high-torque marine servos
- Reliable 8S power handling for high-output marine motors
- Data logging helps fine-tune setup for max speed and efficiency
- Future-proof firmware updates via Castle Link
Usage Notes
- Designed for high-performance RC monohull boats up to 36 inches
- Pair with sensored, sensorless, SmartSense, or brushed marine motors
- Requires high-current connectors rated 120A+ (e.g., Castle CC Bullet 6.5mm or 8.0mm)
- Connect water cooling lines to standard 1/8" tubing before running
- Always confirm motor and battery are rated for 8S marine operation
- Rinse with fresh water and dry fully after each run
Technical Specs
- Brand: Castle Creations
- Model: Hydra X 8S
- ESC Type: Waterproof Brushless Marine
- Input Voltage Range: 2S-8S LiPo (33.6V max)
- BEC Output: 8A peak adjustable (5.5V-8.0V)
- Running Modes: Sensorless, Sensored Only, SmartSense, Brushed
- Water Fittings: Two 0.17" fittings (10-32 UNF threads)
- Dimensions: 69.5 x 54.1 x 24.7 mm
- Weight (with wires): 155.5 g (0.34 lbs)
- Waterproof: Yes
- Data Logging: Yes
- Telemetry: Yes (S.BUS2)
- B-Link Compatible: Yes
- CRYO-DRIVE: Yes
- Warranty: 1 year (Olathe, KS USA)
- Part Number: 010-0175-00
What's Included
- 1 x Castle Creations Hydra X 8S brushless marine ESC
- Water fittings for 1/8" tubing
- Castle Creations decals
- Coupon for free Castle Link USB adapter
- Hydra X 8S Quick Start Guide
Summary
The Hydra X 8S is Castle's flagship 8S marine ESC for serious RC boat builders. Water cooling, CRYO-DRIVE technology, an adjustable BEC, and Castle's bulletproof construction make it the ultimate electronic foundation for high-performance monohulls up to 36 inches.