Season 4

01 Junior Vs. Senior Part 1 Episode 118th January 2007 When Orange County Chopper breaks ground on their new shop, Paul Sr. challenges Paul Jr. to a design contest. 02 Junior Vs. Senior - Part 2 Episode 225th January 2007 The design contest between father and son continues, with fans picking the winner. Paul Sr. goes old school while Jr. puts together a new spider-web design. 03 Go Daddy Part 1 Episode 31st February 2007 OCC designs and builds a high-tech chopper for GoDaddy.com, but Jason and Paul Jr. can't agree on a design, so Senior has to step in. <br /> 04 Go Daddy 2 Episode 48th February 2007 As work continues on the chopper for GoDaddy.com, Mikey and Paul Sr. take a trip to the racetrack, where Mikey gets to show off his racing skills to Danica Patrick. 05 American Chopper Special Episode 511th February 2007 Mikey and Vinnie embark on a quest to obtain New England lobsters for the guys at the shop. 06 Flowjet Bike 1 Episode 615th February 2007 While Orange County Chopper begins work on a custom bike for the Flow International Corporation, Mikey starts on a secret project of his own. 07 Flowjet Bike 2 Episode 722nd February 2007 OCC continues work on the chopper for the Flow International Corporation. Meanwhile, the crew goes to a paintball course to let off a little steam, OCC-style. 08 HP Bike 1 Episode 829th March 2007 OCC boots up their latest custom chopper--a computer-themed creation for the HP Corporation. With the build underway, the OCC crew makes a call to the tattoo artists of <i>Miami Ink</i> to discuss getting some new tattoos. 09 HP Bike 2 Episode 95th April 2007 OCC continues on their computer themed chopper for the HP Corporation. Meanwhile, Ami and Chris from Miami Ink continue their custom body art on Senior and Beth. The guys encounter problems at the bike's reveal and Senior narrowly avoids a mishap. 10 Peavey Bike 1 Episode 1012th April 2007 OCC amps it up as they start on their latest custom creation--a guitar-themed chopper for Peavey Electronics. But when Senior brings in a second build, for the Go Fast Energy Drink company, the work piles up and the company's resources are spread thin. 11 Peavey Bike 2 Episode 1119th April 2007 OCC continues on their custom chopper for Peavey Electronics. The double build winds down as the guys travel to Las Vegas to unveil the Go Fast bike, and then on to Anaheim for the Peavey reveal. 12 Australia 1 Episode 1231st May 2007 It's another OCC family vacation as the Teutuls go walkabout in the 'land down under' where Russell Crowe asks the guys to build an Australia-themed chopper. 13 Australia 2 Episode 137th June 2007 The Teutuls continue their adventures in the Great South Land. After arriving at Uluru, the guys find themselves immersed in Aboriginal culture. 14 Australia 3 Episode 1414th June 2007 Final part of 3 part series. The Teutel's take a two week trip to Australia and create a down-under themed bike. 15 Intel 1 Episode 1512th July 2007 The guys start work on a high-tech bike for Intel featuring the latest in motorcycle and computing gadgetry. 16 Intel 2 Episode 1619th July 2007 The guys finish off work on a high-tech bike for Intel featuring the latest in motorcycle and computing gadgetry. 17 Byron Nelson 1 Episode 1726th July 2007 OCC hits the links for their latest project: three EDS sponsored choppers honoring the career and charitable work of golf legend Byron Nelson. 18 Byron Nelson 2 Episode 182nd August 2007 OCC hits the links for their latest project: three EDS sponsored choppers honoring the career and charitable work of golf legend Byron Nelson. 19 Silver State Choppers' Chopper 1 Episode 1930th August 2007 OCC hovers over their next project--a sleek, custom creation for Silver State Helicopters. But aspects of the bike's design present new challenges for the crew, and forces Paul Jr. to confront creative obstacles of his own. 20 Silver State Choppers' Chopper 2 Episode 206th September 2007 21 Iowa Farm Bureau Bike 1 Episode 2111th October 2007 22 Iowa Farm Bureau Bike 2 Episode 2218th October 2007