Moto GP 4 - Playstation 2 Multiple professional riders, tracks, bikes with all three engine classes - MotoGP, 125cc, and 250cc engine classes Test yourself on 16 tracks from around the world, plus 3 bonus tracks Realistic bike physics, rider motions, plus wet and dry weather conditions, delivering an unprecedented sense of realism Conduct your own Parts Tests between races to upgrade bikes and improve performance 7 gameplay modes including the new Training and Melee modes