American Chopper

Paul Sr. and Jr. begin restoring a 1951 Buick together as a way of working on their relationship. Some improvisation causes chaos when they can't find a tool.

Paul Teutul Sr. and Jr. return to build world-class custom motorcycles, rebuild their pre-eminent bike brands and grow a lasting father-and-son relationship.

Senior designs a throwback brand of affordable motorcycles, to sell out of the OCC Showroom. Plus, Junior builds a bike using multiple aluminium parts.

OCC builds an aggressive paintball bike, but Senior and Josh clash over creative. Meanwhile, Junior designs a farm-inspired bike with a surprise element.

Senior takes on a build for a Vietnam memorial, determined to create a bike worthy of history. Junior is hired by Martin Guitar to design a massive reverse trike.

Senior and his team struggle to deliver a vintage-style bike on time. Junior deals with the complicated assembly of the Martin Guitar reverse trike.

Junior designs a monster trike and discusses taking a big financial risk with Rachael. Josh builds a bike for the Hudson Valley SPCA, headed by Joanie and Senior.

The Teutuls take the restored Buick to Senior's old neighbourhood. Senior and Junior discuss whether building a bike together would damage their relationship.

Paul Teutul Sr. and Jr. return to build world-class custom motorcycles, rebuild their pre-eminent bike brands and grow a lasting father-and-son relationship.

The crew builds one of their fastest bikes ever but a problem threatens the schedule. Plus, Junior and Senior work on a badly beaten Yankee bike.

Senior confronts Junior about his harsh words. Senior closes a huge deal with an exotic car dealership and Junior's simple mistake leads to destruction in the shop.

The crew build a pair of contrasting bikes for a client. Junior designs an ethanol-fuelled motorcycle and there's a confrontation when he changes a Yankees bike design.

OCC builds a bike inspired by a 1965 GTO. Will the job cause Senior to miss his deadline for the first time? Fabrication changes cause problems for Junior's design.

When the crew builds an old-school chopper for a fan, Senior must rely on Mikey to get the job done. And, Junior designs an awe-inspiring trike for a repeat client.