You can have all kinds of modifications carried out perfectly by us. We will carry out your wishes not just on Knapen trailers but also on various types and makes, for example bulk trucks, tippers or belt unloaders. A team of expert welders will be happy to help.


A few examples of the modifications we can carry out for you:

  • Grain hatch in your tipper door;
  • Powersheet on your moving-floor trailer;
  • A steering axle under your belt unloader;
  • An HD cleaner on your bulk truck;
  • And a lot more.
Request a proposal for your desired modification:


Powersheet opbouw.jpg

hardox schoen.jpg

hydraulische klep.jpg