




An extension is an inconspicuous building component – until he suddenly makes the decisive difference.
Anyone who has little space, needs to transport their bicycle regularly, or simply wants to travel smarter knows:
A good stem saves Space, nerves and time.
But what does "good value" actually mean? Is it simply the lowest price – or is there more to it?
Starting from just €99, our RocStem stems offer full swivel functionality – tool-free, stable and suitable for everyday use.
With a RocStem stem Can the handlebars be adjusted? Swivel 90 degrees without tools – in seconds. This reduces the bicycle width by up to two-thirds. Ideal for anyone who:
The RocStem stem makes your bike more compact, flexible and suitable for everyday use – without any compromises on stability or safety.
What makes RocStem special: our patented system „"Steering angle compensation MAX"“.
Unlike conventional swivel stems, the handlebars rise less when turning – instead of moving uncomfortably upwards.
This is due to the design principle: The Steering angle, which causes a slanting movement on many bicycles, is used by us technically balanced.
The result: Space is saved in terms of height as well. A real advantage, especially for motorhome drivers, who have to pay attention to every centimeter.
Our prices reflect the expertise and quality – and the actual benefits you experience in everyday life.
We invest in every detail – from the materials to ease of assembly. What you get is not a mass-produced item, but a meticulously designed component that takes your bike to a new level.
A swiveling handlebar makes all the difference in many situations – for example, when you:
Of course, there are cheaper bicycle stems. But:
RocStem stands for durable technology with real added value. Ideal for anyone who frequently transports their bicycle – e.g., in the car. Motorhome, car, or narrow storage rooms.
RocStem – The swiveling bicycle stem with steering angle compensation MAX

An extension is an inconspicuous building component – until he suddenly makes the decisive difference.
Anyone who has little space, needs to transport their bicycle regularly, or simply wants to travel smarter knows:
A good stem saves Space, nerves and time.
But what does "good value" actually mean? Is it simply the lowest price – or is there more to it?
With a RocStem stem Can the handlebars be adjusted? Swivel 90 degrees without tools – in seconds. This reduces the bicycle width by up to two-thirds. Ideal for anyone who:
The RocStem stem makes your bike more compact, flexible and suitable for everyday use – without any compromises on stability or safety.
What makes RocStem special: our patented system „"Steering angle compensation MAX"“.
Unlike conventional swivel stems, the handlebars rise less when turning – instead of moving uncomfortably upwards.
This is due to the design principle: The Steering angle, which causes a slanting movement on many bicycles, is used by us technically balanced.
The result: Space is saved in terms of height as well. A real advantage, especially for motorhome drivers, who have to pay attention to every centimeter.
Our prices reflect the expertise and quality – and the actual benefits you experience in everyday life.
We invest in every detail – from the materials to ease of assembly. What you get is not a mass-produced item, but a meticulously designed component that takes your bike to a new level.
Starting from just €99, our RocStem stems offer full swivel functionality – tool-free, stable and suitable for everyday use.
A swiveling handlebar makes all the difference in many situations – for example, when you:
Of course, there are cheaper bicycle stems. But:
RocStem stands for durable technology with real added value. Ideal for anyone who frequently transports their bicycle – e.g., in the car. Motorhome, car, or narrow storage rooms.
RocStem – The swiveling bicycle stem with steering angle compensation MAX
Please enter the order number and the email address from the order. You can then choose whether you want to cancel the entire order or only individual items.