GRX is a tie-in with the 2008 Speed Racer movie. The car comes with spear hooks as an accessory. It is a replica of Royalton Industries' prize race car, driven by Cannonball Taylor. The spear hook provided is different from the movie hook, which go under another car and stab onto its underside.
|Col #||Year||Series||Color / Tampo||Base Color||Window Color||Interior Color||Wheel Type||Country||Notes / Variations||Photo|
|M5921||2008||Speed Racer (single pack)||Indigo||Indigo||Black||3SP||original plastic version, comes as a single-pack|
|M5984||2008||Speed Racer (2 pack)||Indigo||Indigo||Black||3SP||part of the 'race-wrecked' series of exclusives|