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Welcome to the Rotrex Knowledge Center!


On this page you’ll find everything you need to successfully install and use your Rotrex supercharger and its traction fluid system. The general guideline documents, datasheets and setup guide can be downloaded using the links below. We have tutorial videos on YouTube, available here also for your convinience.

Datasheets can be found here

The setup and maintenance leaflet can be downloaded here

Our Technical Handbook can be downloaded here

How to fill and prime your supercharger system


Filling and priming your supercharger correctly is a vital procedure and can seem a bit daunting at first – fear not, we’ve made a video tutorial showing you how it’s supposed to be done.

Our specially developed SX150 traction fluid is crucial to keeping your supercharger running cool, efficiently and happily for a long time. Follow the steps in the video and/or the setup and maintenance leaflet.

The setup and maintenance leaflet can be downloaded here

The oil volume calculator can be found here

How to change your supercharger pulley


In need of more boost? You’re going to need a smaller pulley.

Our 6 bolt pulley design makes it easier than ever to change pulley size – follow along in this video to see how it’s done.

Our pulleys are available in sizes from Ø70-110mm in 5mm increments. Make sure that you don’t over-speed your supercharger – if you’re in doubt, use the minimum pulley size calculator, found here

If you have a pre-2022 supercharger, head to the video dedicated to the old style pulleys and pulley adapter.

How to change outlet direction of your supercharger


Is your supercharger blowing the wrong way? Or perhaps you need to remove the compressor housing to weld on a tight bend or clamp connectors?

We’ve got you covered in this simple instructional video – it’s only 6 bolts, but you will need to remove the supercharger from its bracket.

As always, take care to not damage the compressor wheel!

How to change old style pulleys and upgrade to new pulley type


Have a pre-2022 supercharger and want to change pulley or even upgrade to the new pulley style? We’ve got you covered with this tutorial video, showing you the important steps that you need to complete to get it done!

These old style steel pulleys are no longer in production, so we recommend that you upgrade to the new style – they’re a lot nicer, lighter and way easier to change!

Make sure that you don’t over-speed your supercharger – if you’re in doubt, use the minimum pulley size calculator, found here

The 3D printed pulley/pulley adapter holding tool file can be downloaded here

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