USA Extreme bike:To unlock the USA Extreme bike, at the “Game Mode” screen, press Right, Up, B(2), A, B, Up, B(2), A.50th Anniversary bike #1:To unlock the 50th Anniversary bike #1 (yellow/white with black bar stripe), go to the “Season” option and set your season to 2005. Then, win a Quick Race with Valentino Rossi at Laguna Seca.50th Anniversary bike #2:To unlock the 50th Anniversary bike #2 (red/white/green), go to the “Season” option and set your season to 2005. Then, win a Quick Race with Valentino Rossi at Valencia.Quick Race Extreme mode and tracks:To unlock Quick Race Extreme mode and tracks, win a Quick Race in GP mode with Valentino Rossi.Extreme mode 600cc-1200cc:To unlock more Extreme mode tracks, repeat all seventeen tracks.Achievements:ACHIEVEMENT – HOW TO UNLOCKAccredited (100 points) – Get all Rider Credits.Challenge Expert (30 points) – Complete 50 Challenges.Challenge Master (60 points) – Complete all Challenges.Extreme Bike Collector (50 points) – Buy all extreme bikes.Extreme Mode Champion (10 points) – Win any Extreme mode championship.Extreme 1000 – Legend (60 points) – Win a Career mode Extreme 1000 season on the Legend difficulty setting.Extreme 1200 – Champion (50 points) – Win a Career mode Extreme 1200 season on the Champion difficulty setting.Extreme 1200 – Legend (75 points) – Win a Career mode Extreme 1200 season on the Legend difficulty setting.Extreme 1200 – Professional (25 points) – Win a Career mode Extreme 1200 season on the Pro difficulty setting.Extreme 600 – Legend (30 points) – Win a Career mode Extreme 600 season on the Legend difficulty setting.GP Champion (60 points) – Win a Career mode Grand Prix season on the Champion difficulty setting.GP Legend (100 points) – Win a Career mode Grand Prix season on the Legend difficulty setting.GP Professional (30 points) – Win a Career mode Grand Prix season on the Pro difficulty setting.GP Rookie (10 points) – Win a Career mode Grand Prix season on the Rookie difficulty setting.Seeded #1 (75 points) – Seed #1 reached.Seeded #10 (50 points) – Seed #10 reached.Seeded #25 (30 points) – Seed #25 reached.Seeded #50 (20 points) – Seed #50 reached.Seeded #75 (15 points) – Seed #75 reached.Seeded #90 (10 points) – Seed #90 reached.Stunt Mode Rider (10 points) – Play a Stunt mode game in Multiplayer mode.Complete 50 races (20 points) – Complete 50 races.Complete 100 races (30 points) – Complete 100 races.Complete 250 races (30 points) – Complete 250 races.Complete 500 races (50 points) – Complete 500 races.