S4 E1 • Stevel Darneval

The crew transforms a 1958 Chevy Apache into a bad-ass Vintage Dirt Bike Hauler; Steve jumps at the chance to bring Evel Knievel's Formula 1 Dragster back to life.

Première diffusion : 1 octobre 2018

S4 E2 • Race and Reveal

With the delivery date for the ultimate Vintage Dirt Bike Hauler imminent, Steve pushes his crew to complete his vision; Welder Up's reputation for building the meanest and fastest rat rods is challenged.

Première diffusion : 2 octobre 2018

S4 E3 • Heroes and Villains

Steve is asked to build a scary villain rat rod in three weeks and a vintage-inspired charity bike for military veterans in two weeks; Steve worries when the villain car frame takes longer than expected and the Vet Bike won't start.

Première diffusion : 8 octobre 2018

S4 E4 • Joker's Wild

Steve and the crew commit to meeting the original Superhero build time and delivering the Villain Rat Rod in three weeks; with no sign of a transmission, it doesn't look as though the crew will escape the clutches of this perilous deadline.

Première diffusion : 9 octobre 2018

S4 E5 • Gassed Up Bootleggers

Steve takes on one of his funkiest projects ever when he agrees to build a crazy 70's-era gasser racecar for a Navy Vet. Also, Steve tries to make money by restoring and flipping a Prohibition-era bootlegger Model A truck to a Vegas police captain.

Première diffusion : 15 octobre 2018

S4 E6 • One Big Gas Car

The Welder Up crew scramble to finish the 70's gasser, but they run into several problems while testing the car out. Also, Merlon plans a surprise gift for Steve to replace a bike he loved as a kid but lost.

Première diffusion : 16 octobre 2018

S4 E7 • Tricks No Treats

When Steve is commissioned to build a spooky car, he digs up a haunted '55 Chevy and Justin and Travis battle to modify the cursed car; Steve and Merlon flip a Depression era Plymouth.

Première diffusion : 23 octobre 2018

S4 E8 • Curse of the Haunted Rod

The Haunted Rod is cursed. The suspension and the engine don't fit, triggering major body work; and when the engine doesn't fire they miss the deadline. Steve flips a 1920 Old Wayne Gas Pump to off-set extra labor costs on the Haunted Rod.

Première diffusion : 31 octobre 2018

S4 E9 • Iron Man and the Mullet

Steve and the Welderup crew have to get creative when they're tasked with building an iron-worker themed rat rod that doubles as a work truck. Justin makes a big mistake and Steve then tries to flip a beat up '67 Coronet that he finds in a junkyard

Première diffusion : 13 novembre 2018

S4 E10 • The Real Iron Man Revealed

With only two weeks left to go, the Welder Up crew still has to build an engine for Tyrone's Iron Rod truck and install it and then re-cut the frame to add shocks.

Première diffusion : 20 novembre 2018

S4 E11 • Big Bad Bus

Steve faces his toughest challenge yet while designing a tour bus that represents Welder Up and meets the high standards of his sisters, Donnalee and Stacy; Justin drifts into unfamiliar territory with his 1962 Lark.

Première diffusion : 27 novembre 2018

S4 E12 • Bussin' Out

The WelderUp tour bus receives an interior steampunk makeover, while Merlon converts a Cummins diesel engine to run on vegetable oil and Travis installs triple turbos. In addition, Steve stands to make his largest profit yet off of an unusual flip.

Première diffusion : 4 décembre 2018

S4 E13 • Model A Mayhem

Driven by his love of Steve's Diesel Rat Rod, a heavy equipment operator commissions a version for himself; instead, Steve delivers a "go anywhere" rat rod that can climb mountains as easily as it whips down the highway at 100 mph.

Première diffusion : 12 décembre 2018