Ultralight 403 C
915 Wh Trolling Motor for Kayak


Ultralight 403 C

915 Wh Trolling Motor for Kayak

$ 2,299.00
plus shipping charges

Goods on backorder
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Product description

  • Ultralight outboard (weighs just 10.7 kg including battery)
  • 1-hp equivalent
  • With integrated 915 Wh high-performance lithium battery
  • Comes with battery, charger, remote throttle, on-board computer, GPS-based range calculation and emergency magnetic stop key
  • Steering /tilting /auto-kickup – easy integration with your kayak's steering system
  • Extended navigation functions of the on-board computer with TorqTrac (not included)
  • Universal mounting ball for easy attachment to the kayak
  • Untiring: up to 120 km range

Ordering information

  • Item number: 1406-00  | EAN: 4260113695128
  • Equipment included: Ultralight 403 C with battery, charger, remote throttle, on-board computer, GPS-based range calculation and emergency magnetic stop key
  • Warranty: 2 years for non-commercial use
  • We currently deliver to the following countries
  • California residents please click here for Prop 65 warning

  • Ultralight 403 C

    Torqeedo Ultralight 403 Torqeedo Ultralight 403

    Our extremely light Ultralight 403 C fits on all popular types of kayak, and there are special models for special requirements.

    Motor, battery and remote throttle cable are completely waterproof to IP67. Regardless of whether your are kayaking on inland water or the sea, on protected or unprotected waters – the Ultralight 403 C is your ideal companion for every adventure

    Also for canoes and very small boats.

    Ultralight 403 C – Benefits:

    • Weight including battery: 10.7 kg
    • Maximum speed up to 10 km/h (boat-dependent), faster that any trolling motor
    • Range of up to 120 km at low speed (also boat-dependent)
    • Completely waterproof (IP67)
    • Precise GPS-based calculation of remaining range
    • Solar rechargeable – including during the voyage
    Torqeedo Ultralight 403

    Steering / tilting / auto-kickup
    Optimised propeller
    High-performance lithium battery
    with integrated GPS
    Mounting ball –
    is simply attached to the kayak
    Emergency magnetic stop key
    to stop the motor
    Display on the throttle
    – provides information on: battery charge status, remaining range, speed over ground, input power
    Maximum-efficiency propulsion
    for premium performance and range
    Extended navigation functions
    with TorqTrac (not included)

  • Range

    Ultralight 403 C with Integrated Battery (915 WH / 29.6 V / 31 Ah)



    Speed in km/h* Range in km* Running time in hours
    Slow 4.2 96.0 24:00
    Half throttle 6.0 71.0 11:50
    Full throttle 9.3 21.0 02:20

    * Depends on type of boat, load, propeller and conditions. Speed and range indications do not represent a legal guarantee. Example: Fishing kayak Hobie Mirage Revolution(4.1 m / 26.3 kg)

    Information on range and speed

    For a displacement boat making way through the water, the required propulsive power increases in proportion to the cube of the speed. This means that if you want to double your speed, you need eight times as much power.

    And vice-versa, a small reduction in speed is enough to increase the achievable range substantially.

    The Torqeedo Ultralight's on-board computer calculates the remaining range constantly, by linking the motor's consumption data with the charging level of the batteries, and the speed over the ground from the GPS. This allows you to read the remaining range in real time from the motor display or the smartphone app TorqTrac.


  • Specifications

    Technical Data Ultralight



    Ultralight 403 C
    Input power in watts 400
    Propulsive power in watts 180
    Comparable petrol outboards (propulsive power) 1 HP
    Comparable petrol outboards (thrust) 2 HP
    Maximum overall efficiency in % 45
    Static thrust in lbs* 33
    Integrated battery 915 Wh Li-Ion
    Nominal voltage 29.6
    Final charging voltage 33.6
    Total weight in kg 10.7
    Motor weight without battery in kg 4.4
    Weight of integrated battery 6,3
    Shaft length in cm 45
    Standard propeller
    (v = speed in km/h at p = power in watts)
    Alternative propeller options -
    Maximum propeller speed in rpm 1,200
    Control Remote throttle
    Steering Provision to connect to kayak rudder; lockable
    Tilting device Manual with grounding protection
    Trim device -
    Stepless forward/reverse drive Yes
    Integrated on-board computer Yes
    * Torqeedo static thrust measurement is based on internationally accepted ISO standards. Static thrust figures for conventional trolling motors are typically measured differently, which results in higher values. To compare Torqeedo static thrust data with conventional trolling motors, add approximately 50% to the Torqeedo static thrust values.

    Technical Drawing


  • Video Clip

    Video Ultralight 403 C

    Torqeedo Ultralight 403 C

    Learn about the benefits of our lightest motor, the Ultralight 403 C, for yourself.


  • Tips

    Ultralight 403 C FAQ

    • What power does the integrated battery deliver?

      The battery has a capacity of 915 Wh, i.e. 31 Ah at 29.6 V.

    • How long does it take to recharge the battery?

      When the battery is completely discharged it takes approx. 10,5 hours to fully recharge it.

      With the solar charger 50 W (accessory) you can charge anytime, during travel and while the sun is out. 

    • What useful life can I expect the lithium batteries to have?

      The life expectancy of lithium batteries in recreational use is, more or less, independent of charging cycles.

      There is no memory effect either, i.e. you can fully charge them after each trip irrespective of the charge status shown in the display.

      Generally speaking, a capacity loss of approx. 4 % per year is to be expected. Capacity loss will, however, accelerate if the battery is permanently exposed to heat. Also storing the battery always fully charged will accelerate ageing.

      There are no concerns about using the battery in high temperatures, we recommend that you take the battery out of the sun and store it in a cool place after use.

      Your battery must be returned to a Torqeedo Service Centre for service 8 years after the date of manufacture.

    • Can the Ultralight 403 C be connected to the steering?

      Yes, the Ultralight 403 C can be connected to your kayak's steering system. Please refer to your kayak's instructions and our information on mounting.

    • What happens if I capsize?

      If the kayak capsizes, the motor stops automatically to prevent injury – provided the magnetic kill switch is attached to your wrist or life jacket.

      The motor only runs when the magnetic kill switch is placed in the prescribed position on the remote throttle.

      Should you fall overboard, the magnetic kill switch will go with you and the motor will stop immediately.

    • What is the warranty on the Ultralight 403 C?

      The Ultralight 403 C has a 2-year warranty from the date of purchase for non-commercial use.

    • What mounting options are available?

      Use with Hobie kayaks: We recommend the Hobie "evolve" product (available from Hobie dealers).

      Use with Grabner kayaks: Please use the Grabner mounting kit.

      Use with Prijon kayaks: Please use the Prijon rudder mounting.

      All others: The ultralight 403 C can be mounted on just about any kayak using the mounting ball provided.