When Phineas and Ferb offer Baljeet to a remote control bike race, he refuses and tells them how all his relatives got attacked by tigers when they raced. Phineas then states that they're going to help Baljeet.
Design and Construction
Not much is about how it was built, but they tricked out the bikes and they each had different bikes:
Phineas - a triangular orangish-yellow bike with a red stripe
Ferb - a yellow normal bike
Isabella - a pink bike that you have to hunch over to grab
Baljeet - a blue "old-fashion" bike
Buford- a green bike where you have to lean back to ride
Greg LeMond - a yellow normal "old-fashioned" bike (different from Ferb)
Tour de Ferb is a pun on the famous Tour de France, which was won three times by Greg LeMond, who voiced himself in this episode.
Baljeet might of been the one who was attacked by the tiger, but since Greg speed in front of him, the tiger mistook him for Baljeet.