We’re thrilled to introduce the ULTRA EVO STG, the next evolution in electric motor systems by 3LI Tech — a brand known for engineering innovation and durability from the heart of Spain. The ULTRA EVO STG is a powerful, ultra-compact electric propulsion system designed specifically for modern kayak fishing and adventure touring.
This high-performance motor features a sleek and integrated bracket system, quick deployment, and intuitive digital control, making it a game-changer for paddlers seeking greater range, precision, and control on the water. With its whisper-quiet operation, corrosion-resistant build, and robust torque, the ULTRA EVO STG is ready to take your Galaxy Kayak further, faster.
The Ultra Evo STG is a high-performance brushless electric motor specially designed for kayaks. Built for smooth, reliable performance, it features a remote control system with digital display for real-time data monitoring and precise manoeuvring on the water.
For added safety, it includes a man-overboard system that automatically shuts down the motor if the user falls in the water - for peace of mind every time out.
The power supply is housed in IPX67-certified waterproof enclosures, providing complete protection against dust and temporary immersion. All cables and connectors are fully sealed, making the system ideal for marine and saltwater environments.
The motor is mounted on a marine-grade aluminium bracket, designed to withstand corrosion and harsh sea conditions - providing a solid, reliable installation for fishermen and adventure kayakers.
All connections are waterproof and the charger is included.
Mounting options: We have several brackets to make it compatible with many kayaks - choose from the drop-down list here
STG motor 42V max
42V max battery in waterproof case
Here's a table comparing the speed and autonomy of the 2 models
Important: according to our tests, it's the kayak that really determines the maximum speed of a motor. On the FX 3, for example, the 42 motor is no faster than the 24 motor, which would only be useful if the paddler is a few kilos overweight. In any case, the choice of power should not be based on maximum speed, as this severely limits range and is of no use over a long distance. At 13 km per hour on a waveless lake, the kayak is not designed for high speeds, let alone the sea.
The 2 versions on offer, 24 volts and 42 volts with a bigger battery, are therefore rather dependent on the kayak -- a bigger, heavier kayak with a paddler of the same characteristics would have greater range at the same speed, not only because of the battery but also because of the power of the motor, which would therefore turn less hard. Also interesting for tandems with 2 people and a lot more weight to carry.
On most of our Galaxy models, wildcat and alboran, and for a paddler weighing less than 90 kilos, 24 volts is more than sufficient.
Tests carried out in a lake without waves with an alboran fx3 and a wildcat and a heavy model and a rigid SUP of another brand, these data are the averages. And with the 2 motors 24 v and 42 v MAX
* Max power: results which also depend on the kayak and the rider, the rigid SUP board being the fastest in our tests when motorised (15.5 km/h...)
Ultra evo 24 v
| Vitesse (nœuds) | Vitesse (km/h) | Consommation (W) (approx.) | Autonomie (heures) (approx.) | Distance (km) (approx.) |
| 2 | 3.7 | 125 | 13.2 | 62.0 |
| 3 | 5.6 | 187 | 8.8 | 62.1 |
| 4 | 7.4 | 323 | 5.1 | 47.9 |
| 5 | 9.3 | 532 | 3.1 | 36.4 |
| 6.8 max * | 12.6 | 2000 | 0.45 | 7.1 |
Ultra EVO MAX 42 v
| Vitesse (nœuds) | Vitesse (km/h) | Consommation (W) (approx.) | Autonomie (heures) (approx.) | Distance (km) (approx.) |
| 2 | 3.7 | 100 | 19.5 | 90.4 |
| 3 | 5.6 | 150 | 13.0 | 90.4 |
| 4 | 7.4 | 258 | 7.5 | 69.9 |
| 5 | 9.3 | 426 | 4.6 | 53.0 |
| 7.5 max * | 14.0 | 1900 | 0.55 | 9.6 |
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