STI and Yamaha Team Up to Present the 2013 Quad-X Racing Series

STI and Yamaha Team Up to Present the 2013 Quad-X Racing Series the last decade it’s been the most important ATV motocross series in the southwest U.S. It started out under the Quadcross moniker in 2003 but now goes by the name of Yamaha Quad-X Racing Series Presented By STI. 

It goes off for the 2013 season this coming weekend, March 17, at Glen Helen Raceway near San Bernardino, California. The Quad-X Series will continue for seven more events throughout the SoCal/Arizona region during the year and reach its conclusion back at Glen Helen for Round 8 on a Saturday in early November. As always, an extravagant (and free) awards banquet will take place immediately following that last day’s action. 

And, as always, STI will be a prominent part of the Quad-X scene. Competitors have learned they can rely on STI’s trackside support program, expertly manned by our pals at Big Kid Racing. 

Big news this season is the addition of an STI Tire & Wheel race contingency program. Mount STI Tech 4 MX tires front and rear, then get signed up and checked off through Big Kid Racing. Be prepared to enjoy not only winning performance but also a strong possibility of earning credits toward more fresh rubber at future events. 

We hope to see you there. There’s a class for every type of quad racer, from Pee Wee/Youth and Amateur to 450 Production Pro-Am and Pro. The whole family is being welcomed at several top-notch facilities. The variety of classes, special promotions and free overnight camping at each event, as well as the special end-of-season shindig, will make the 2013 Quad-X series a must-do for west coast ATV racers. Join us! 

For more information, including race information and a full list of classes, head over to While you’re there, be sure to check out the collection of action packed videos from past events. More will be posted as the racing heats up this season as well. 

Stay tuned to Glen Helen Raceway online at and on Facebook at or on Twitter at