Sr. and Jr. find themselves in front of a judge because Sr. is suing Jr. for his 20% ownership of OCC. Meanwhile, the team at OCC is hard at work on a chopper for ESAB, one of the oldest welding equipment companies in the country.

The guys at OCC are tapped to build the ultimate vehicle for the Science Channel’s ‘Meteorite Men’. A tragic accident at Paul Jr. Designs prompts Sr. to put his differences with his sons aside and he reaches out to Jr. and Mikey.

OCC builds a ramp to launch a dummy dressed as Jr. over a creek. Meanwhile, Jr. and his team begin fabricating their very first chopper. Jr. realizes that he needs help in the paint department so he recruits his old friend Nubs to the team.

Sr. and the team at OCC are tapped to build a bike for the FBI and the local Newburgh Police department. Meanwhile the guys at PJD are furiously attempting to fabricate both the Geico bike and the Anti-Venom bike in time for the bike rally.

The pressure is on at OCC and Paul Jr. Designs as both shops race to complete their bike builds in time for the famous Sturgis bike rally.

OCC & PJD arrive at Sturgis to face off for the 1st time to see who will have the better bike. Junior wonders whether Senior will show his support by attending one of his reveals, but Senior has no interest in seeing either of his son's first bikes.

After debuting his first bike at Sturgis, PJD is swamped with fan mail and emails from people wanting bikes. Meanwhile, Senior receives an invitation to Junior's wedding and reaches out to Mikey on whether or not he should attend.

OCC gets a bike build for the Chicago Blackhawks to celebrate wining the Stanley Cup. However, a miscommunication leads to the crew scrapping the build and starting over from scratch. Meanwhile, Senior rushes his dog to the emergency room.

The OCC crew continues building the Blackhawks bike while Junior meets with representatives from Carolina Carports who want PJD to build a bike for their company. Later, Senior makes an important decision agreeing to meet with a therapist for Mikey.

PJD continues its Carolina Carports bike build while OCC begins work for a new client. Senior sees a therapist on Mikey's terms, but his sons are not impressed. Junior unveils his bike to a crowd of 400,000 in North Carolina.

Senior and Junior are both invited to Jason's wedding. Junior gets a build from a longtime OCC client, frustrating Senior. OCC unveils the Hair Club bike in front of a roaring crowd in Washington.

Lee returns to town and he & Senior mend a fence while discussing Senior’s relationships with his sons. Senior and his lawyers bring a second lawsuit against PJD. OCC unveils its Headrush bike in NYC while PJD unveils a top-secret bike in Florida.

Rumors spread about OCC being in foreclosure. PJD takes on Universal Property Insurance as a new client. The mood is celebratory at OCC as they unveil a bike for St. Jude Hospital. Tempers flare at PJD and an employee may lose his job.

Tensions are high at PJD as Odie back talks Junior. Junior fires Odie who then turns to Senior for counsel. PJD pulls off a double-unveil for Universal Property Insurance while OCC unveils a bike to an enthusiastic crowd at Bic.

Paul Senior, Paul Junior & Mikey take a close look at how their family has fallen apart. New interviews from all three explore the events that have lead to Paul Senior's estrangement from his sons. With so much bad blood can the Teutuls reconcile?

Get an inside look at what it takes to produce the American Chopper series through interviews with the Teutuls, producers and crew.