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Smooth adjustment of the seat

Even as far back as 2000, we thought that a bike should adapt to the rider and not the other way round. That’s why we used an adjustable seat for our first bike, which had both the angle and the pedal distance adjustable. With each further development stage, we introduced a more accurate adjustment, until 2013, when we reached a stage of adjusting without positions. This concept is based on a sliding sleeve, which we produce in a straight version for our tricycles and some bicycles, as well as in a curved version for recumbents.

Reinforced with glass fibre

The sleeve is made of durable, glass fibre reinforced plastic which we opted for in order to prevent scratching of the paint even during frequent use.

Perfect fit

It is extremely important for the seat to be secure whilst riding, which is why there are two small hard-anodised aluminium parts attached to the lower part of the seat. They fit onto a three-part stainless steel insert that is fitted within the sleeve itself. When you tighten the quick-release, everything slots together nice and tight.

Speed and simplicity

Adjusting the seat is very easy. The upper quick release is used to secure the seat and when you release the lower one, the grip around the frame loosens and the seat can be moved. If you are a heavy rider, the lower quick release must be tightened really firmly.

Folding mechanism

In 2015, we introduced a new folding mechanism we are really proud of. We wanted to create a folding tricycle that would be adequately stiff and whose folding mechanism would be smooth and easy to operate. The feedback from hundreds of AZUB riders has confirmed that we have definitely accomplished what we had planned.

XXL lever

The folding mechanism has a large ergonomic lever. By large, we really mean large. It is located on the top of the frame so that it would be easily accessible without having to stick your fingers in hard to reach places. This lever makes folding our trikes a doddle.

Large diameter

The large diameter of the folding mechanism and the long axle placed in maintenance-free sleeve bearings increase the overall stiffness of the entire folding frame.

Foldable or separable

You can choose whether you want a folding tricycle for easy transport or parking, or a separable one. Our folding mechanism is not integrated into the frame, it is a separate part that is screwed into the frame. It can therefore be machined with very high precision and finished in a high quality surface finish. And more importantly, the mechanism can be replaced if necessary.


There is only very little need for adjustments, but now and again, you should adjust the clamping force of the mechanism. It’s easy to do and all you need is an Allen key.

Made with precision

The entire folding mechanism is completely made on a CNC machine. Therefore all the parts fit together perfectly and there is no friction. Precision was a requirement we were not prepared to compromise on at all.

Precision with anodising

Since the machines do so well to produce parts with such high precision, it would be a shame to dip them in paint which does not deliver precise results. Therefore, the surface is anodised to increase its mechanical resistance and to preserve this precision. Here too, we have gone a step further and opted for PTFE anodizing that is often used in the firearm industry. Its mechanical properties are perfect and it minimizes friction, which is absolutely crucial when folding a tricycle.


Both halves of the folding mechanism are made of 7075 aluminium which has significantly better properties than any other weldable aluminium.

Perfect connection

Both halves of the folding mechanism have precisely shaped lugs which lock into each other and increase the torsional stiffness of the whole frame. And the stainless steel lock which holds both halves together is machined to a high precision as well.

IGUS bearings

The fluidity with which the two halves of the frame move during the actual folding is truly exceptional, courtesy of the sleeve bearings made by the world renowned manufacturer, IGUS. We just love these small grey pieces of durable plastic. Their functionality is absolutely incredible.

Ergonomic seat

The seat is crucial not only for the comfort when riding a trike, but it will also determine how fast you will be able to corner, whether you and your trike will become true friends and whether you will get the right response from the road that will be running under your wheels. That is why we have devoted so much time to its development as well.

Design is everything

The shape of the tricycle seat is based on the shape of a human back and on the position that the rider adopts. We have spared no expense in getting the bends just right. The seat cushion is long enough to prevent slipping, in the lower back part it copies the proportions of the body, and the curve at the top makes the shoulders and neck bend just right to allow comfortable view of the road. What is more, the length of the seat is sufficient and really supports the rider’s shoulders, which is invaluable on very long trips.

One size fits all

Our seats compensate for the differences in people’s heights by the mesh cover which can be stretched with straps located at the back. The cover can therefore be adapted to the shape of your back, and if you feel any discomfort, you can adjust it yourself by straightening up the relevant parts.

Setting the tightness

In production, the seat cover is set really tight, though it will loosen a little after several trips. Only then will you experience the feel of its correct side steering, so important during fast cornering. However, the cover should not be loosened too much so that you would slouch, and not too tight since in some places it could uncomfortable for your back. You can adjust the tightness of individual sections with the straps at the back of the seat.

Additional padding

If you are looking for maximum comfort and excellent ventilation, then we highly recommend you get additional padding for your seat, the Ventisit Classic. This 2 cm thick Ventisit seat pad is made in the Netherlands, it is UV resistant, it keeps its shape even on long journeys and it lasts almost forever. In the recumbent world, Ventisit is one of the tried and tested accessory suppliers that you can, literally, lean on.

F2F - Fold To Flat

The folding mechanism on our tricycles is positioned in such a way that when you start folding the rear of the frame, the trike slowly “turns” and the rear wheel ends up folded flat. You also remove the seat and, if necessary, also the wheels, so the resulting package is remarkably small.

Short rear construction

The extremely short rear fork is the secret weapon of our tricycles. It not only improves the grip on poor surfaces, but also the riding properties when cornering and the suspension.

Stiffness rules

The stiffness of the rear construction is truly crucial for the trike’s superb riding properties. The more so if you are a heavier rider or if you, like us, love fast twisty descents. That is why our tricycles without suspension have a large rear triangle, designed to be as short as possible to make the rear wheel as close as possible to the seat. The lower legs made from a D-shaped section further contribute to the great lateral stiffness of the entire trike.

Derailleur hanger

If your trike is equipped with a standard size rear hub, that is 135 mm (all tricycles with 20" rear wheel and tricycles with hub motors or hub gears in 26" versions), the rear fork will have a Specialized D17 derailleur hanger. This option will make it easier to get a replacement should you need to as it is one of the most commonly used derailleur hangers in the world.

Rohloff OEM dropouts

There is none other professional solution to fit the Rohloff hub gear than the so-called OEM dropouts. They feature an extended left groove for the hub to which the torque bar is attached. So there no Rohloff Torque Arm or Speedbone gets in the way. Rohloff OEM dropouts are fitted as standard on all our bikes.

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