About us

Speed ​​Service shares your passion for Porsche.


Not a Porsche dealer, but if you have a Porsche that is a few years old or for whom the Porsche is more than an ordinary car, you should visit Speed ​​Service, the Porsche 911 Specialist! located in Sittard, Limburg is an absolute must.

When you step into our young, dynamic company, you will feel the love for the profession and for the brand everywhere!

We are located in a completely renovated farmhouse built in 1726. From where we carry out metal work, high-quality spraypaint, engine and gearbox overhaul, among other things. We have our own engine superflow test bench, our own spray booth, sanding floor, etc., in short, everything under one roof.

For over 20 years we have been specialized in maintenance, repair, overhaul, restoration and race/rally preparation of all air-cooled Porsche 911 models. From complete restorations to custom builds, you have come to the right place.




That's why we also build our own creations: the 964 Backdates from Speed ​​Service, The Porsche 911 Specialist: The Madsters.

If you are wondering what a 964 Backdate is exactly; Some of the most iconic classics of yesteryear have been remixed with modern mechanics to deliver a stunning and unique driving experience, with that delightful style we love about classics. The greatest exponent of the retro-modern philosophy and the most appropriate is the Porsche.

Keeping its beautiful classic look, but being relatively modern, it is a feast for the eyes and heart of the driver.




Speed ​​Service started building its own 964 backdates in 2015. The first Madster was launched at the InterClassics and TopMobiel fair in the MECC in Maastricht 2016.


Since then we have developed a new and improved (our second) 964 Backdate, the MADSTER RT, alongside the Madster RT Targa .

This third 964 Backdate, this time a Madster Targa, has just been revealed april 2022!


These Porsche 964 Backdates er built entirely in-house at our location in Sittard, the Netherlands. All body modifications for these 964 Backdates, are made of steel and are hand made. A large number of parts are designed and manufactured by us in-house.







Because of the professionalism and friendliness of Olav Gelissen and his team, clients throughout the Netherlands, Belgium, Germany, England, France and even from Sweden find their way to the company .


Speed Service and Porsche, they belong together.

A matter of trust.

Speed ​​Service is an independent Porsche specialist and has no ties to the PON dealer organization