Successfully complete the hardcore part of career mode to unlock all bikes.
Game Shark Codes
Master Code (Must Be On) 0E3C7DF2 1645EBB30C072FA3 F893D77F
Press R1 to Turn Gravity Off EC4614DD F8FCF7FF3C102127 C648FEEE
Press L1 to Turn Gravity On EC4614DD F8FCF3FF3C102127 C648FEC6
Disable A.I. 3C0C9FBF FBDCFEF63C0C9FC3 F8FCFEFE
Never Crash From Awkward Landings 3C158AFF FBDCFEF63C158A03 F8FCFEFE3C158C9F FBDCFEF63C158CA3 F8FCFEFE
All Challenges Completed 5C22F987 F891FEF11DF82FD0 F8FCFEFE
Career Slot 1 Codes
Infinite Skill Points 1C22E3D5 F8FCFEF5
Max Stats 2C22E3D1 F8FCF9F52C22E3D3 F8FCF9F5
All Series, Tracks, Bikes Unlocked/All Trophies 3C22E3DB F9FDFDF13C22E3DF F9FDFDF13C22E3E3 F9FDFDF12C22E3E7 F8FCFDF1
Enable Programmer's Codes [Note]
Infinite Turbos 2C21144B F8FCFEF1
Moon Gravity 2C21144B F8FCFEF0
Big Head Mode 2C21144B F8FCCEFE
Tiny Mode 2C21144B F8FCFDFE
Infinite Turbo + Moon Gravity 2C21144B F8FCFEF3
Big Head + Tiny Mode 2C21144B F8FCCDFE
All Cheats On 2C21144B F8FCCDF0
Note: Only use one code at a time.