SLEIPNER SX50 EXTERNAL STERN THRUSTER | 12V | 50-62KG THRUST | FOR TRANSOMS UP TO 50MM

SLEIPNER SX50 EXTERNAL STERN THRUSTER | 12V | 50-62KG THRUST | FOR TRANSOMS UP TO 50MM

The ultimate ultra-compact external stern thruster engineered to fit where standard thrusters won’t—no extensive fiberglass work required. The Sleipner Side-Power SX50 (Model: SX50-50MM-2) is a highly versatile, self-contained external pod thruster designed specifically for motorboats and cruising sailboats from 26 to 37 feet. Outfitted with a streamlined 50mm (1.96") mounting shaft structure, this model is built to effortlessly pass through standard-thickness fiberglass transoms and aluminum hulls up to 50mm in thickness.

The SX50 packs an immense punch for its ultra-compact size, yielding a reliable 110 lbs (50 kg) of continuous thrust at a 10.5V nominal load, and ramping all the way up to 136 lbs (62 kg) of peak thrust at a full 12V charge.

Key Features:

• Standard 50mm Transom Capability: Engineered with a specialized short-reach mounting thread layout, this unit securely clamps through standard solid-fiberglass, reinforced transoms, and aluminum plates up to 50mm (1.96 inches) thick without adding unnecessary bulk inside the hull.

• No Complex Glasswork / Easy Installation: Eliminates the need for traditional internal fiberglass tunneling. Installation only requires drilling small, clean mounting holes for the securing bolts and the main power cable entry sleeve.

• Patented Intelligent Power Control (IPC): Sleipner’s advanced microprocessor-controlled safety system provides a protective millisecond delay when switching drive directions to eliminate mechanical drivetrain shock. It actively monitors solenoid function and automatically kills power if a solenoid lock-in is detected.

• Whisper-Quiet Single Q-Prop™ Propeller: Features a state-of-the-art 5-blade composite skew propeller running inside a highly optimized 140mm (5.5") integrated tunnel. Paired with vibration-absorbing hull connection sleeves, this setup drops cabin noise and stern vibrations by up to 75%.

• Ignition Protected (ISO 8846) & Hermetically Sealed: Certified under ISO 8846 and UL 1500 standards. All electrical components are isolated inside a watertight composite casing, making it 100% safe to install on gasoline-powered boats or near fuel vapor lockers.

• Enhanced Hydrodynamic Water Cooling: Because the entire aluminum pod sits completely submerged outside the hull, it benefits from constant, rapid water-jacket cooling, resulting in significantly longer continuous runtimes per cycle than internal DC alternatives.

• Complete Galvanic Separation: Immersed aluminum and drive components are thoroughly isolated from the vessel's onboard 12V electrical ground network, terminating the threat of stray-current galvanic corrosion. Includes factory-installed anodes for immediate underwater protection.

• Zero Maintenance Sealed Lubrication: Features a lifetime-lubricated gearhousing running a heavy-duty ceramic-on-carbon mechanical seal face, guaranteeing total protection against saltwater intrusion.

Specifications:

• Part Number: SX50-50MM-2 (SX50/140-12V-50MM)

• Thrust Power (at 10.5V Nominal): 50 kg (110 lbs)

• Thrust Power (at 12V Peak): 62 kg (136 lbs)

• Motor Output (at 10.5V): 2.8 kW (3.75 HP)

• Typical Vessel Size Class: 26 to 37 Feet (8 to 11 meters)

• System Voltage: 12V DC

• Max Transom/Hull Thickness: Up to 50 mm (1.96'')

• Internal Tunnel Diameter: 140 mm (5.51'')

• Nominal Current Draw: 370 Amps

• Recommended Fuse Size: ANL 325

• Net Weight: 15.3 kg (33.7 lbs)

• Propulsion System: Single 5-Blade Q-Prop™

• Control Signaling Type: Analog Plug-and-Go

Pro Tip: For vessels experiencing heavy water-flow friction at cruising speeds, or for mid-speed sailboats looking to minimize drag to zero, the SX50 can be retrofitted with an optional Hydropod low-drag cowl kit. This seamlessly covers the pod assembly to ensure smooth hydrodynamic tracking while under way.