Minn Kota Ultrex QUEST 90/115 45″ Shaft 24/36V MSI and Micro Remote

The Minn Kota Ultrex QUEST 90/115 45″ Shaft 24/36V MSI and Micro Remote is an advanced freshwater bow-mount trolling motor combining QUEST brushless technology, Built-In MEGA Side Imaging, cable-steer responsiveness, Power Steering and GPS boat control. Its dual-voltage design delivers 90 lb of thrust on 24V or 115 lb on 36V, giving anglers flexibility when matching the motor to their boat’s electrical system.

For anglers using compatible Humminbird electronics, the MSI (MEGA Side Imaging) configuration is particularly attractive because it integrates detailed side, down and 2D sonar capabilities into the trolling motor without requiring an externally mounted imaging transducer.

Current manufacturer information is available from the official Minn Kota Ultrex QUEST product page.

Minn Kota Ultrex QUEST 90/115 45″ MSI Specifications

Brand: Minn Kota
Series: Ultrex QUEST
Product Type: Freshwater bow-mount trolling motor
Motor Technology: QUEST Brushless
Steering: Cable steer with Power Steering
Maximum Thrust: 90 lb @ 24V / 115 lb @ 36V
Voltage: 24/36V
Shaft Length: 45 inches
Built-In Sonar: MEGA Side Imaging
MEGA Down Imaging: Yes, through Built-In MEGA SI
Dual Spectrum CHIRP: Yes, through compatible Built-In MEGA Imaging system
Speed Control: Variable
Digital Maximizer: Yes
Advanced GPS: Yes
Spot-Lock: Yes
AutoPilot: Yes
Drift Mode: Yes
One-Boat Network: Compatible
Foot Pedal: Heel-Toe / Cable
Power Steering: Yes
Wireless Control: Micro Remote
Lift-Assist: Yes
Composite Shaft: Yes
Water Type: Freshwater
Auto Stow/Deploy: No
Power Trim: No

For compatible Humminbird fish finders and accessories, explore trolling motors and marine electronics at Precision Marine Outdoors.

QUEST Brushless Power: 90 LB or 115 LB Thrust

A major advantage of the Minn Kota Ultrex QUEST 90/115 45″ MSI and Micro Remote is its dual-voltage QUEST brushless motor.

When configured for 24V, the motor delivers up to 90 lb of thrust. With a manufacturer-approved 36V configuration, maximum thrust increases to 115 lb.

The QUEST platform is designed around a brushless motor architecture for improved efficiency, torque and durability compared with Minn Kota’s traditional brushed Ultrex platform. It is particularly useful for anglers who need strong boat control in changing wind and current.

For general background on electric trolling propulsion, see the Wikipedia overview of trolling motors.

Built-In MEGA Side Imaging

The major feature separating this configuration from the DSC model is Built-In MEGA Side Imaging (MSI).

The imaging transducer is integrated directly into the trolling motor’s lower unit. This avoids having to clamp a separate imaging transducer to the trolling motor and route exposed sonar wiring down the shaft.

When connected to compatible Humminbird electronics, MEGA Side Imaging provides detailed views to the sides of the boat, helping anglers search larger areas for fish, submerged vegetation, rocks, timber and other underwater structure.

Side Imaging + Down Imaging + 2D Sonar

Choosing MSI doesn’t limit the system to Side Imaging.

The integrated MEGA Imaging system supports applicable MEGA Side Imaging, MEGA Down Imaging and Dual Spectrum CHIRP 2D sonar capabilities through compatible Humminbird electronics.

That makes the Minn Kota Ultrex QUEST 90/115 45″ MSI and Micro Remote especially attractive for anglers building an integrated Humminbird bow-electronics system.

Compatibility varies by fish-finder model and generation. Check your exact unit through Minn Kota’s official Built-In MEGA Imaging compatibility guide.

MSI vs. MDI vs. DSC

Minn Kota’s sonar abbreviations can make Ultrex configurations look similar, but there are important differences.

DSC – Dual Spectrum CHIRP: primarily provides traditional 2D CHIRP sonar.

MDI – MEGA Down Imaging: adds detailed imaging beneath the boat alongside applicable 2D CHIRP capabilities.

MSI – MEGA Side Imaging: provides the most comprehensive integrated imaging package of these three, adding detailed Side Imaging while supporting applicable Down Imaging and 2D sonar capabilities through compatible Humminbird equipment.

For anglers who actively search for offshore structure or want to scan water on both sides of the boat, MSI can provide a significant advantage.

Cable Steering with Power Steering

Ultrex QUEST retains the familiar steering feel that helped establish the Ultrex platform.

The heel-toe cable foot pedal gives anglers immediate directional response while Power Steering reduces the effort required to turn the motor.

This combination is especially useful when casting from the bow because the motor can be controlled primarily by foot, leaving both hands available for fishing.

The QUEST version combines that familiar control system with a newer brushless power platform and updated electronics.

Advanced GPS and Spot-Lock

The Minn Kota Ultrex QUEST 90/115 45″ MSI and Micro Remote incorporates Minn Kota’s Advanced GPS Trolling System.

Spot-Lock uses GPS to help maintain the boat at a selected fishing position without constant steering adjustments. Other supported functions include AutoPilot and Drift Mode, providing additional control over heading and boat movement.

Combined with compatible Humminbird electronics through the One-Boat Network, supported trolling-motor, sonar, mapping and navigation functions can work together as an integrated fishing system.

Compact Micro Remote

The included Micro Remote complements the heel-toe foot pedal by providing compact wireless access to supported trolling-motor functions.

This is useful when an angler moves away from the bow or wants quick access to key controls without carrying a larger remote.

The cable foot pedal remains available for precise steering while the Micro Remote adds convenient wireless operation.

45-Inch Shaft

The 45-inch shaft is intended for compatible freshwater fishing boats where the bow-to-waterline measurement does not require a longer 52- or 60-inch trolling motor.

Correct shaft length helps keep the propeller sufficiently submerged during normal fishing conditions while avoiding unnecessary shaft height above the bow.

Anglers with deeper bows or boats that experience significant bow rise in waves should compare the 45-inch model with longer Ultrex QUEST configurations before purchasing.

Built for Integrated Humminbird Fishing Systems

For anglers already using Humminbird electronics, the MSI version offers one of the strongest reasons to choose this Ultrex QUEST configuration.

MEGA Side Imaging provides detailed sonar coverage, while One-Boat Network integration allows compatible Minn Kota and Humminbird products to work together.

This creates a bow system that combines trolling propulsion, GPS boat positioning, sonar imaging and navigation instead of treating each component as a completely separate device.

For compatible marine electronics, shop trolling motors and fish finders at Precision Marine Outdoors.

How to Use the Ultrex QUEST 90/115 MSI

Install the trolling motor securely on a compatible bow according to the instructions for the exact Minn Kota model. Because QUEST supports both 24V and 36V operation, the electrical system, circuit protection and marine-grade components should follow Minn Kota’s requirements for the voltage configuration being used.

Deploy and stow the motor using its assisted manual mechanism. Use the heel-toe pedal for precise steering and variable-speed control, or use the Micro Remote for supported wireless functions.

Spot-Lock can be activated when GPS-assisted position holding is needed. Connect Built-In MEGA Side Imaging to a compatible Humminbird fish finder using the manufacturer-specified connection or adapter.

For complete setup information, use the official Minn Kota Ultrex manuals and installation guides.

Frequently Asked Questions

How much thrust does the Ultrex QUEST 90/115 provide?

It delivers 90 lb of maximum thrust on 24V or 115 lb on 36V.

Is Ultrex QUEST brushless?

Yes. QUEST is Minn Kota’s brushless trolling-motor platform, designed for improved efficiency, torque and durability.

What does MSI mean?

MSI stands for MEGA Side Imaging, providing detailed imaging to the sides of the boat through compatible Humminbird electronics.

Does MEGA Side Imaging also provide Down Imaging?

The Built-In MEGA SI system supports applicable Side Imaging, Down Imaging and Dual Spectrum CHIRP 2D sonar capabilities when paired with compatible Humminbird equipment.

What’s the difference between MSI and DSC?

DSC focuses on Dual Spectrum CHIRP 2D sonar, while MSI adds MEGA Side Imaging and additional compatible imaging capabilities. MSI is the better option when detailed side-scanning sonar is a priority.

Does it have Spot-Lock?

Yes. Ultrex QUEST includes GPS Spot-Lock for assisted boat positioning.

Does it include a Micro Remote?

Yes. This configuration includes a compact wireless Micro Remote for supported motor functions.

Does it have Power Steering?

Yes. Ultrex QUEST combines cable steering and Power Steering through its heel-toe foot pedal.

Does it automatically stow and deploy?

No. Ultrex QUEST is manually deployed and stowed with assistance. Auto Stow/Deploy and Power Trim are not Ultrex features.