In "It's a Trap!" during the speeder chase on Endor the Empire uses 10-speed bikes. I don't understand why. I mean obviously Rule of Funny, but they could have used anything, even using speeders. Why bikes?
Quite possibly for the sole reason of setting up the Pee Wee Herman joke.
And the Made of Explodium gag when the bicycles explode whenever they run into something.