I think once Igor realizes it's not his bike, he then embarks on a quest to find his own.
JDS would for sure try to help him find it, but when they eventually track Igor's bike down to the old forge, they discover that rumours of a crime syndicate of bike stealing MMA fighters is more real than they ever imagined.
That nasty Joe Son is not only heading up a gang of Hawaiian bike thieves, but they're fitting stabilisers on them because they can't actually ride without them.
Furious, Igor and Junior challenge the Hawaiians to a cycle off at the local skate park, but all the bikes are mountain bikes not BMX's which is less than ideal and leads to quite a few scrapes and bruises.
Eventually Igor gets his bike back, but those stabilisers are here to stay.