King 4X4 Challenge Bittersweet for Extreme Rock-rod Competitors

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Craig and Mike Stumph gave it their all at the 2007 King 4X4 Challenge at the Carbon County Fairgrounds in Price, Utah. The competition is designed to push vehicles and drivers to their limits.

K&N keeps the Stumph racing engines clean, photo by moabactionshots.comK&N keeps the Stumph racing engines clean, photo by
The course is similar to the Top Truck Challenge Series in California. Competitors face a rock garden, log cross, tire pit and a mud pit. The Stumph’s drove a Rock-rod turbo charged echo tech in the modified class. “It makes about 400 hp but the Nitrus injection puts us up to 550 hp,” said Craig Stump. “My son Mike was the driver at this event and I was the spotter.”
Stumph Family uses K&N products, photo by
Stumph Family uses K&N products, photo by
King 4X4 Challenge, photo by
King 4X4 Challenge, photo by

Mike Stumph received the most aggressive driver award. “Mike has been driving since he was 8-years-old and now that he has a driver’s license he has taken over the wheel of the Commando for some events,” said Stumph. “He did a great job driving and was the only driver in his class to complete the mud bog.”

Mike Stumph finished first in Log Cross, Tire Pit, Mud Pit and Rocks. The Stumph family uses K&N Engineering products. “We go through all kinds of nasty mud and dust,” said Stumph. “K&N filters protect our engines. I’ve used K&N oil and air filters since 1997 and would not use anything else.”

Electric issues hurt the Stumph family and kept them out of the overall. “We had been fighting the problem for two weeks and I thought we had it repaired,” said Stumph. “The electric gremlin hit and we had to be towed to the pits. We hope to have it fixed by the next race at Delta, Utah.”

Follow Mike and Craig Stumph throughout the racing season at the K&N news site. Find K&N products for your vehicle using the K&N application search then use the K&N dealer search to find a K&N dealer in your part of the world.

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K&N Engineering, Inc., with headquarters in Riverside, California, has been the world's leader in performance filter technology since 1969, serving the needs of the automotive, motorcycle, marine, industrial and military markets. K&N is heavily involved in nearly every form of motorsports from off-road and powersports to drag racing, stock cars and road racing. For more information about K&N Filters, please contact K&N Engineering, Inc., P.O. Box 1329, Riverside, CA 92502-1329, (800) 213-4182 for a dealer near you, (800) 858-3333 for technical service/questions, (951) 826-4001 Fax, e-mail, or visit