Harmonic Pin Ring (HPR) technology

Before we look at the specs, let's talk about the "trade secret." Most e-bike motors use gears and belts to transmit power. This works very well, but it takes up space, adds weight, and generates noise.

TQ takes a completely different approach with its patented Harmonic Pin Ring technology. Without getting too technical, this system uses an elliptical wave generator and a flexible inner ring instead of a complex gearbox. The result?

• Ultra-compact : the motor disappears almost entirely behind the cutting deck.

• Lightweight : we are talking about motors weighing around 1.8 to 1.9 kg.

• Quiet : with no noisy gears, the motor is virtually inaudible.

TQ-HPR50

The HPR50 is the motor that truly launched the " light e-MTB " and electric gravel bikes. It is designed for the athletic cyclist who wants a little boost while still feeling like they are pedaling on their own.

How is he doing?

Testers often describe the sensation as suddenly having "super-powered legs." There is no jolt when the motor activates or deactivates. The power increase is extremely smooth and gradual. The motor is virtually silent, especially on unpaved terrain. Only if you push it hard on a steep incline might you hear a slight high-pitched whine, but it's not annoying.

Key specifications HPR50

• Torque : 50 Nm. Not the most powerful on the market, but more than enough for natural climbs.

• Maximum power : 300 watts.

• Engine weight : 1.85 kg.

• Q-factor : 135 mm. This means your feet are as close together as on a road bike or MTB , which is better for your knees and feels more natural.

TQ-HPR60

The new star of the range is the TQ-HPR60. Think of it as the big brother of the HPR50. Externally, it is almost identical and fits into the same frames, but significant improvements have been made internally. TQ has responded to the demand for extra power for more demanding trails.

What's new?

The HPR60 offers significant gains over its predecessor. You get 20% more torque and 17% more power. This makes it ideal for electric mountain bikers who want to ride harder without sacrificing lightness. Despite this increased power, it remains incredibly quiet and weighs only 1,900 grams.

Key specifications HPR60

• Torque : 60 Nm.

• Maximum power : 350 watts.

• Engine weight : 1,900 grams (1.9 kg).

• Thermal efficiency : improved cooling system allowing the engine to maintain its power for longer.

Batteries and range extenders

A lightweight motor requires a lightweight battery. TQ offers several options so that manufacturers can find the perfect balance between weight and range.

• 360 Wh battery : the standard for many bikes equipped with the HPR50. It weighs only 1.83 kg. Enough for a nice ride.

• 580 Wh battery : specially introduced for the HPR60 and more robust e-MTBs. Ideal for long rides. It weighs approximately 2.7 kg.

• 290 Wh battery : for weight purists who want the lightest bike possible (less than 1.5 kg).
  
  

Still not enough? Don't worry. TQ offers an ingenious 160 Wh Range Extender. The size of a water bottle (500 ml), it simply fits into the bottle cage. It weighs only 900 grams. Its advantage: a dual charging port that allows you to charge both the bike and the extender simultaneously.

Control and display

No one wants a bulky screen on their handlebars that distracts them from the trail. TQ understands this.

• Integrated display in the top tube : most bikes equipped with TQ motors have a display discreetly integrated into the frame. The HPR50 often uses a monochrome display. The HPR60 features a new 2-inch OLED color display that is perfectly readable even in bright sunlight.

• Ease of use : a single button turns the system on and switches between modes (Eco, Mid, High/Turbo).

• Remote control : for mountain bikers, a minimalist handlebar control is available, allowing you to keep your hands on the handlebars in technical terrain.
  
  

You can also customize everything via the TQ E-Bike app (or apps from bike brands such as Trek). Would you like a slightly more dynamic Eco mode? Or, on the contrary, a more economical one? You decide how the motor responds. The system also connects seamlessly to bike computers and apps such as Strava and Komoot.

Who is a TQ engine suitable for?

If you're looking for an e-bike that propels you effortlessly to the top of the mountain, a TQ system may not be right for you.

On the other hand, if you are a competitive cyclist who:

• wants to enjoy a natural driving experience;

• does not like the humming noise of conventional electric motors;

• wants a bike that is light enough to ride comfortably even without assistance;

• appreciates a sleek design where you can barely tell it's an e-bike...

… then a bike equipped with a TQ HPR50 or HPR60 is probably your ideal bike.

Where can I find them?

As TQ is positioned in the premium segment, these engines are found in the high-end models of major brands. Think of Trek Fuel EXe and Domane+, the Scott Solace and Lumen, as well as models from BMC, Rotwild, Simplon and Fantic.

Whether you choose gravel, road, or challenging trails, with a TQ motor in your frame, you benefit from "Technology in Quality": German precision that makes your rides more enjoyable, without ever taking over your pedaling experience.