WeWentSimRacing 
Trak Racer Buttkicker Mount Upgrade Kit for Trak Racer RS6 and RS8
by Trak Racer
Enhance your racing experience with the Buttkicker Mount Upgrade Kit for Trak Racer RS6 and RS8. Mount it at the rear of your chassis for a solid fit. Compatible with Buttkicker™ Gamer 1 and 2, it ensures a fast and simple installation. Finished in matte black for a sleek look. (Note: Not compatible with TR8).