look up any word, like jamflex:
Renntech is another tuning company for Mercedes-Benz, just like Brabus. You can Renntech an AMG (i.e. Renntech S55 AMG).
I personally like Brabus over RENNtech, but both are excellent companies that do great things for a great car.
by Mainline4L April 30, 2005
Is a not well known Mercedes-Benz preformence company which is twice the price of AMGs. They deliver great HP and style.

All though they can be a bit costy.
Hey look i just got my RENNtech S-class. Sweeeet dude.
by The Master December 28, 2004