Enjoying the performance of your tacx flow turbo trainer but want to take training to the next level this kit allows you to upgrade a flow to an i flow virtual reality trainer this package contains a new wireless handlebar unit and tacx trainer software 4 to turn your training session into a truly immersive riding experience tts 4 has an updated user interface and the virtual riders outfits bicycles and terrains have all been completely redesigned since tts 3 a combination of virtual en