The music in Riptide GP: Renegade is licensed from various artists, and unfortunately we do not have the rights to distribute them as a soundtrack. However, you can find them on music licensing websites, and some of them you may be able to find and purchase yourself online.
Here is a list of the songs and their URLs:
D&B Stuf - ossbeatsmusic
Dancing - plastic3
Dubsteps - AudioFortress
Extreme Adrenaline - LoopsLab
Mainstread Drum & Bass - HIT-ME
Melodic Drum & Bass - Music Sense
New Generation - CrispySound
Now is the Time to Trance - wavebrigade
One Hard Step - Amoebacrew
Summer Break - SoundmaxX