The Build Is On S4, E1: Senior proposes that he and Junior combine forces to build a bike, but Junior is unsure of how to respond; when Rick's wedding brings the two together, Junior gets the reassurance to make a decision once and for all.
For the Teutuls, what was once a family business is now a family feud, and all bets are off for what new fireworks await in AMERICAN CHOPPER: SENIOR VS. JUNIOR. The series captures the renewed rivalry as Paul Sr. continues to build world-famous custom bikes at OCC, while Junior opens up Paul Jr. Designs.
Closed captions refer to subtitles in available languages with the addition of relevant non-dialogue information.