K&N Filters Announced as Presenting Sponsor for Advanstar’s BooKoo Arenacross Championship Series

Leading Air Filter Joins AX Team to Deliver Bigger Air…Better Tracks…More Speed…


Santa Ana, CA — August 18, 2005 — Advanstar Communications, Inc. — a leading provider of print, event and online media for the powersports, off-road and automotive aftermarket industries — today announced that K&N Filters would be the Presenting Sponsor of the BooKoo Arenacross Championship Series and each of its racing events across the country.

“When you think of K&N Filters, you think of performance and passion. With K&N Filters as our presenting sponsor to kick off the BooKoo Arenacross Championship Series, we are continuing to align ourselves with the brands that reflect the vision of our inaugural series. said Mike Kidd, Arenacross Director.

K&N is the leading manufacturer of high-flow air filters for the powersports industry, and is the filter of choice for many top arenacross racers. K&N’s filter technology is used throughout the motorsports industry from Formula 1 to the Baja 1000. Known for increasing power, K&N’s filters also offer superior filtration, especially under dusty conditions during off-road and arenacross racing.

“We’re proud to be the official filter and Presenting Sponsor of the BooKoo Arenacross Championship Series, said Dennis Mahan, Powersports R&D Manager for K&N. “This premier series will give us the opportunity to present our new line of XStream Off-Road air filters to our target audience in an exciting venue while supporting the sport of Arenacross.

The BooKoo Arenacross Championship Series is one of a series of new brands aimed at expanding Advanstar’s consumer media and events portfolio on a national scale. “We’re committed to offering enthusiasts and race fans real value and entertainment with our Arenacross series, and our sponsors are benefitting from doing business with a customer service-focused company that can get their message and brand in front of consumers as well as distributors and retailers, said Danny Phillips, Executive Vice President of Advanstar. “With flagship brands like K&N and out-of-industry sponsors like BooKoo supporting our racing, magazines and shows, combined with the strongest management team in motorcycle events, Advanstar’s Arenacross Championship Series will take this kind of racing to a whole new level, continued Phillips.

The 12-event race series kicks off in Fort Worth, Texas from November 4-6, 2005 and wraps up in Tulsa, Oklahoma, February 10-12, 2006. For more information please visit www.racearenacross.com (1-817-595-5844) • www.knfilters.com (1-800-858-3333) • www.bookooenergy.com. ( 1-866-568-3322).

About K&N Engineering

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 Formula One, off-road and powersports to drag racing, stock cars and road racing. For more information about K&N Filters visit www.knfilters.com.

About the Advanstar Powersports Group

The Powersports Group is the biggest producer worldwide for trade and consumer shows in the powersports industry, including the single largest aftermarket trade-only event: the Dealernews International Powersports Dealer Expo. In addition to Dealer Expo, Advanstar’s powersports shows encompass nearly every product in all segments of the industry. ACI’s Big Twin Weest show represents the passion of Big Twin, bringing together the manufacturers, builders, and buyers who power the marketplace. Targeting motorcycle markets across the country, Advanstar’s Cycle World International Motorcycle Shows presented by Toyota Trucks draws more than 600,000 powersports consumers. Newly launched Arenacross Championship Series will debut in Fort Worth, Texas as stop one of a 12-event indoor dirt bike race series for competitors, racers, and fans of all ages. The powersports group also publishes leading trade publications Dealernews magazine and American Big Twin Dealer , as well as event-associated consumer publications Powersports Magazine, Hollister Guide, and Sturgis Guide.

About Advanstar Communications Inc.

Advanstar Communications Inc. (www.advanstar.com) is a leading worldwide media company providing integrated marketing solutions for the Fashion, Life Sciences and Powersports industries. Advanstar serves business professionals and consumers in these industries with its portfolio of 81 events, 57 publications and directories, 114 electronic publications and Web sites, as well as educational and direct marketing products and services. Market-leading brands and a commitment to delivering innovative, quality products and services enables Advanstar to “Connect Our Customers With Theirs. Advanstar has roughly 1,000 employees and currently operates from multiple offices in North America and Europe.