RockJock 4x4 by John Currie Performance Group, Inc.
1592 N. Jenks Dr.
Corona, CA 92878
Office Hours
7:00 AM to 4:30 PM Monday thru Friday
For assistance, please choose from the staff members below and click to send them an e-mail!
Travis Shephard - Sales & Purchasing

Travis Shephard


Travis has worked for John Currie since 2001 and strives to give the best service and support to RockJock customers. Travis has a long family background in the automotive industry. His grandfather owned Astro Wheels in the 1960’s and ran drag cars. His father was also involved in cars from high school age with many hot rods and drag cars, and later in life tried, circle track racing and Jeeping and off roading. Travis grew up going out to the desert, drag races and local car. In high school he started out with hotrods and drag cars. He graduated from UTI and worked as a mechanic at a local Jeep dealership for a few years before coming to the Currie organization. He bought his first Jeep, a '91 Cherokee, in 2009 and has been Jeeping many of the popular SoCal areas since. He also has a '91 Camaro street/road race car and a '74 Camaro street stock circle track car. Other projects he has on the back burner are are a Jeep Comanche and a '55 Chevy.

Phone: ext. 116


Brian Shephard - Sales & Marketing / Data

Brian Shephard


Brian has been working for the Currie family since 1999, so he has seen the evolution of all of the modern Jeep platforms and has been on the front lines of all of RockJock’s product development from the beginning.
Brian handles all of our marketing and media relations, data distribution and product photography.  You’ll likely run into Brian at a show out in the world somewhere as he has been traveling the country, corner to corner, to events for nearly 2 decades.
Brian grew up in a Jeeping family and has owned 2 XJs. Currently his love of vintage hot rods and muscle cars has pushed all of the Jeeps out of the picture, but never say never! Maybe there is another Jeep in his future!

Phone: ext. 115


Tiny Stark - Media

Tiny Stark


If it has an internal combustion engine, Tiny probably loves it! Rebuilding his first engine (a 383 max wedge motor) when he was 12, Tiny has always loved anything and everything automotive related.
Having owned and operated his own custom shop for over 28 years, he has had the opportunity to work on just about everything from crazy Jeep builds to lowriders and everything in between.
Tinys other passion is photography. As a PADI certified open water diver and FAA certificated private pilot, he has plenty of opportunity to capture imagery from his travels!
It was inevitable then that Tinys love of cars and his love of photography would eventually collide. That occurrence led to Tiny establishing and bringing to print not one but two different automotive magazine titles. Shortly thereafter he established a weekly podcast companion that he hosted and produced, to accompany the magazines as they went to print.
Tinys talents lend themselves well to operating as the Media Director for RockJock 4x4 & JCPG as he produces original digital content, and has established & maintains all of our social media channels as well.
Currently in his shop he has a couple of different projects, including an early 80's café bike and an upcoming Jeep project for his wife.

Phone: ext. 148


Rudy Raya - Facilities Manager

Rudy Raya


Rudy has worked for the Currie family since 1996. He originally started in the 9” Ford 3rd member assembly department at Currie Enterprises and moved thru various departments, including component installation during vehicle builds, machinist, CAD & SolidWorks designer (on projects such as our Impala and Chevelle control arms) and warehouse lead. Today, Rudy enjoys his facilities manager position in charge of maintenance and safety at RockJock 4x4 / John Currie Performance Group.

Phone: ext. 107


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