In The Garage

Senior asks Junior to collaborate with him on a bike build; Rick's wedding throws Senior and Junior together.

Senior and Junior brainstorm bike styles for their collaboration; PJD unveils the GEICO Armed Forces tribute bike.

The guys at OCC try to build the first bike powered by natural gas; Paul Jr. is trying to get his new company off the ground; Mikey questions his role at Orange County Choppers and his relationship with his father.

Senior and Junior begin to open up to each other; OCC stars a bike for Wildgame Innovations; PJD unveils the Loopster trike.

Junior attempts his first ever dually trike; Senior and his team struggle to build two bikes in three weeks; the Teutuls cruise the Buick through Senior's old stomping grounds.

Paul Teutul and his son Paul Jr. create some of the world's most original custom motorcycles -- Paul Sr. operates Orange County Choppers, and Junior leads his staff at Paul Jr. Designs. Both shops are located a stone's throw from each other in Orange County, N.Y., but sometimes it seems as if father and son are worlds apart. They were business partners at OCC until a family feud that included a la

Richard puts the Monkeys in charge of hot-rodding a '73 Chevy P30 Step Van for their first build on their own.

The Monkeys race to finish their first big build without Aaron; Richard tries to unload his '65 Shelby Mustang GT with a frozen engine.

The team works on a 2018 Jeep Wrangler, the second Jeep they renew for Veterans Day; Richards makes a deal for a 1955 Crown Vic.

Richard races toward a vintage payday by restoring his '37 Buick Racer back to its Indy 500 roots; the guys buy a one-owner '77 Blazer that could fetch them double their money; a surprise birthday gift has Richard feeling nostalgic.

Richard Rawlings and his crew of Monkeys race to finish a replica 1937 Buick Indy Racer for a deep-pocket client; the 1975 Datsun 280 Z draws a buyer, sending Richard racing to the bank.

Richard pays big bucks hoping to use a '63 Cadillac for a quick flip project; the guys do a bang-up job on a budget, but Jason goes rogue and risks tanking the whole thing.

The guys set a seven-day deadline to bust the rust off a 1968 Ford Galaxie XL; Richard pairs up with Variety Motorsports to knock out a 1980 Stutz Four Motor Car for country music singer Charley Pride; Richard rides a beast of a motorcycle.

The Dieselsellerz are pulling out all the stops to completely rebuild the Super Six for a client; Heavy D faces a challenge when his neighbor asks him to turn a 5-ton military truck into a snow-demolishing plow.

The Dieselsellerz pull out all the stops to build a new giveaway: a Nissan Titan with a near-zero emission Cummins engine; Heavy D fulfills his lifelong dream to drive a truck in Monster Jam.

A big new client asks Heavy D, Diesel Dave and the Dieselsellerz crew to turn a busted 1969 Chevy C10 into a diesel-drinking lowrider; the guys run into a perfect fix and flip Prolite race truck, which Heavy tests at a local dirt track.

For the Dieselsellerz giveaway, Thunder vs. Lightning, two lifted F450s compete and the winner decides which one to take home; the guys continue turning a busted '69 Chevy C10 into a diesel low rider for a millionaire client.

The guys face a huge challenge when a big dollar collector asks them to slam a 1969 Chevy C10; Heavy D and the guys are off to bike week at Sturgis to check out a one-of-a-kind hydrostatic diesel motorcycle.

Richard Petty, Farmtruck and AZN relive some of their most embarrassing moments; Keith Spiker from the Dirty 7 has no idea what kind of redemption battle he's in for.

Diesel Dave picks his first giveaway truck and dreams big, attempting to build the 2020 version of the Kodiak; Todd LeDuc challenges the guys to a desert race and flips the script by picking The Muscle to be on his team.

Diesel Dave continues working on his epic modern-day Kodiak while making sure he doesn't break the bank; Sam the Mad Scientist unveils The Kraken; a diesel-powered monowheel vehicle that is unlike anything the guys have ever seen.

Mad Scientist Sam's wild creation, the Kraken, comes to life, but Heavy D continues to be skeptical of the build's potential viral success; a high-profile client wants to customize a Ram 3500, which puts Diesel Dave and The Muscle to the test.