LOKSMITH   Master code
POPULATE   Unlock all characters
YARDSALE   Unlock all costumes
TRAKMEET   Unlock all tracks
WHEELS     Unlock all bikes
FLYSOLO    No bike
FIRESALE   Constant flames
WTCHKPRS   Slow-mo
FTAIL      Low gravity
ALLFREEK   Freekout always full
COOLDUDE   Unlock Clifford Adoptante 
TOUGHGUY   Unlock Mike Jones 
BLONDIE    Unlock Jessica Patterson 
GIMEGREG   Unlock Greg Albertyn 
POPULATE   Unlock All Characters 
CARVEROK   Unlock Burn It Up Track 
CLIPPERS   Unlock Gnome Sweet Gnome Track 
BLACKJAK   Unlock Let It Ride Track 
TODAMOON   Unlock Rocket Garden Track 
WIDEOPEN   Unlock Crash Pad FreeStyle Track 
TUCKELLE   Unlock The Burbs FreeStyle Track 
EYEDROPS   Unlock Bloodshot Bike (Mike Metzger) 
BRRRRRAP   Unlock Rock Of Ages Bike (Mike Metzger) 
SEVENTWO   Unlock Rhino Rage Bike (Mike Metzger) 
WHATEVER   Unlock Mulisha Man Bike (Brian Deegan) 
HEDBANGR   Unlock Heavy Metal Bike (Brian Deegan) 
WHOZASKN   Unlock Dominator Bike (Brian Deegan) 
OVENMITT   Unlock Hot Stuff Bike (Leeann Tweeden) 
STYLIN     Unlock Trendsetter Bike (Leeann Tweeden) 
GOODLOOK   Unlock Seducer Bike (Leeann Tweeden) 
HEREIAM    Unlock Amore Bike (Stefy Bau) 
SPARKLES   Unlock Disco Tech Bike (Stefy Bau) 
TWONEONE   Unlock 211 Bike (Stefy Bau) 
SUPDUDE    Unlock Gone Tiki Bike (Clifford Adoptante) 
GOFLOBRO   Unlock Island Spirit Bike (Clifford Adoptante) 
STOKED     Unlock Hang Loose Bike (Clifford Adoptante) 
KICKBUTT   Unlock Beater Bike (Mike Jones) 
HORNS      Unlock Lil' Demon Bike (Mike Jones) 
PLUNGER    Unlock Flushed Bike (Mike Jones) 
HEKACOOL   Unlock Speedy Bike (Jessica Patterson) 
LIGHTNIN   Unlock Charged Up Bike (Jessica Patterson) 
TONBOY     Unlock Racer Girl Bike (Jessica Patterson) 
ALLSHOOK   Unlock The King Bike (Greg Albertyn) 
PATRIOT    Unlock National Pride Bike (Greg Albertyn) 
NUMBER1    Unlock Champion Bike (Greg Albertyn) 
HELLOOOO   Unlock Ecko MX Outfit (Mike Metzger) 
BODYART    Unlock All Tatted Up Outfit (Mike Metzger) 
RIPPED     Unlock Muscle Bound Outfit (Brian Deegan) 
SOLDIER    Unlock Commander Outfit (Brian Deegan) 
THNKPINK   Unlock Fun Lovin' Outfit (Leeann Tweeden) 
SPICY      Unlock Red Hot Outfit (Leeann Tweeden) 
KIDSGAME   Unlock Playing Jax Outfit (Stefy Bau) 
INVASION   Unlock UFO Racer Outfit (Stefy Bau) 
WINGS      Unlock Tiki Outfit (Clifford Adoptante) 
NOSLEEVE   Unlock Tankin' It Outfit (Clifford Adoptante) 
BABYBLUE   Unlock Blue Collar Outfit (Mike Jones) 
BOXCARS    Unlock High Roller Outfit (Mike Jones) 
LAYERS     Unlock Warming Up Outfit (Jessica Patterson) 
NOT2GRLY   Unlock Hoodie Style Outfit (Jessica Patterson) 
ILOOKGUD   Unlock Sharp Dresser Outfit (Greg Albertyn) 
COMET      Unlock Star Rider Outfit (Greg Albertyn) 

Thanks to Revolution readers Dubious Character, SnOwMaNinFl, Matt R Twing, caleb stapleton, Marvin Pearson and lookiehere21!