Junior designs a monster trike and takes a huge financial gamble. Senior and his team struggle to build two bikes in three weeks for a Florida resort. Senior and Junior ponder the idea of building a bike together.

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. Senior surprises Junior with the first theme bike they ever built.

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, an undertaking that pushes his team to their limits.

OCC builds an aggressive paintball bike, but Senior and Josh clash over creative. Junior designs a farm-inspired bike with a surprise element. Senior and Junior attempt to get the Buick running and celebrate Junior's birthday.

Senior goes back to his roots, designing a throwback brand of affordable motorcycles, to sell out of the OCC Showroom. Junior challenges himself building a bike using multiple aluminum parts.

Junior designs a bike inspired by a futuristic big rig, but the massive amount of fab crushes his schedule. The OCC team builds a vintage military style bike with sidecar to benefit a foundation for wounded veterans.

Senior and Junior begin restoring a 1951 Buick, but don't always go by the book. Senior risks everything by moving designs away from their famous choppers. Junior challenges himself to build a streamlined bike for the MLB Network to impress his dad.