Handlebar-stem comboWhat are the benefits of system integration?

Tim Folchert

 · 17.05.2022

Handlebar-stem combo: What are the benefits of system integration?Photo: Georg Grieshaber
Handlebar-stem combo: What are the benefits of system integration?
Too many cables and components make the front look chaotic. System integration ensures a clean cockpit - but not only increases the feel-good factor.

Successful System integration on the headset looks like this: Standardised industrial bearings are simply placed in precisely fitting recesses in the head tube and held in position by clamping the steerer tube and stem. The fork is simply removed for maintenance. The bearings can then be removed, cleaned, greased and reinserted. No special tools are required for this, just the appropriate Allen key for the stem and headset bolt. Even a mini-tool would be sufficient.

Press-fit headsets, on the other hand, are the opposite and are rarely found today. The installation and removal effort is significantly greater here because not only are more components required, but also a special press-fit tool. Mondraker goes one step further with its semi-integrated stem. This also takes over the function of the Ahead cap. This saves weight and ensures an almost seamless transition into the main frame. However, the steerer tube has to be shortened precisely because spacers can no longer be fitted over the stem, which also minimises the adjustment options.

  Partially integrated: Thanks to the cut-out in the top tube, the stem visually merges with the main frame.Photo: Georg Grieshaber Partially integrated: Thanks to the cut-out in the top tube, the stem visually merges with the main frame.

It becomes more complex when cables and lines disappear through the headset into the frame. This may look elegant, but in the worst case it can lead to kinked cables and increased friction. As many manufacturers install their own system here, workshops are faced with new challenges every time and have to adapt to the special features of the headset, the spacers and the stem.

Our tip for amateur mechanics: When dismantling, memorise the exact sequence and set the parts aside in the correct order. This will save you guesswork when reassembling. Handlebar-stem combos, which merge both parts into one organic unit, are also not without their pitfalls: True, they save weight and transform any bike into an eye-catcher. But if you want to adjust the stem length, handlebar rise or backsweep afterwards, you have to replace the entire unit - and that can be expensive.

  Long bones are out: The stem is connected to the steerer tube and the handlebars to the stem by means of a clamp.Photo: Robert Niedring Long bones are out: The stem is connected to the steerer tube and the handlebars to the stem by means of a clamp.  Handlebar-stem units are stylish and lightweight, but offer the rider no option for subsequent customisation.Photo: Max Fuchs,Georg Grieshaber Handlebar-stem units are stylish and lightweight, but offer the rider no option for subsequent customisation.
How do you like this article?
  That's what our expert Hans-Peter Ettenberger (BIKE Testlab) says: Handlebar-stem units are stylish and easy to fit, but if you want to experiment with the settings, you should go for a conventional stem. As the units are usually made of carbon, they are also extremely expensive.Photo: Georg Grieshaber That's what our expert Hans-Peter Ettenberger (BIKE Testlab) says: Handlebar-stem units are stylish and easy to fit, but if you want to experiment with the settings, you should go for a conventional stem. As the units are usually made of carbon, they are also extremely expensive.

Most read in category Components