The fourth round of the Muscle Milk TWMX Race Series Spring Cup will take place this weekend at the world famous Glen Helen Raceway in San Bernardino, California. The track, which is known for thrilling speeds and elevations changes, has hosted an array of professional events, including the AMA Outdoor Nationals and the FIM Motocross Grand Prix, and will host the growing Southern California race series for the second time this year.

Early weather predictions for the event call for clear skies and abundant sunshine, which will be the perfect start to summer in Southern California. The Glen Helen round will feature the action and environment that helps make the Muscle Milk TWMX Race Series unique, with an expansive vendors row and the support from the industry's largest brands. Kyle Lewis will be on hand to display the latest offerings from chemical manufacturer Kal-Gard. MTA will have an array of parts and accessories, including VP Racing Fuels and Bridgestone tires, available for trackside purchase. And with the event taking place just before Mother's Day, One Industries would like to show their appreciation and respect to all of the hard working moms – the glue that holds us all together. Stop by the ONE Industries booth to receive a free token of their appreciation in the form of a fabulous ONE Industries tee for all mothers. ONE will also have the custom printed backgrounds for the first 300 members of the race series.

Glen Helen will hold an open practice session on Saturday, May 5th, for a $20 entry fee. Race series membership is not required for Saturday's practice, but is necessary to compete on Sunday.

Online sign ups for this weekend's round of the Spring Cup are open at and close Friday, May 4th, at midnight. This method of sign up has numerous benefits, from its PayPal option to the shorter race day check-in lines. Those who use the online registration will automatically entered to win an Oakley prize package and will have the chance of getting a better gate pick in your first moto. First moto gate selection will be determined in the order in which your entry is received.


Practice fee $20 and no membership / camping free


  • 2012 Race Membership
  • $25 BTO Gift Credit
  • TransWorld Motocross Magazine Subscription
  • 2012 Race Series T – Shirt
  • New Era Hat
  • Total Value: $129!!!!!


[Annual membership fees will be collected onsite]
*First 300 sign ups will receive a custom Muscle Milk TWMX Race Series backgrounds!

About Muscle Milk TWMX Race Series
Owned and operated by TransWorld Motocross, this race series runs annually and consists of four, 6-race series (Winter Cup, Spring Cup, Summer Cup, and Fall Cup) totaling 24 races, all of which include riders of varying ages and ranges of experience from beginner to pro levels. The series title sponsor is Muscle Milk. Associate sponsors include: Bell Helmets, BTO Sports, and One Industries. Affiliate sponsors include: Asterisk, BRAKING, Farmer John, Leatt, Metal Mulisha, New Era Caps, Oakley and Works Connection. Racing classes include PeeWee, Minis, 250s, 450s, Girls/Women, 25+ and Vet. Go online to for more information about the Muscle Milk TWMX Race Series.

Series Sponsors
Muscle Milk
BTO Sports
One Industries
Farmer John
New Era
Metal Mulisha
Works Connection
MX Style

About TransWorld Motocross
TransWorld Motocross is the largest motocross media outlet in the world, delivering comprehensive lifestyle coverage to an audience of new and experienced motocross enthusiasts about their favorite sport. Found online at Motocross is published by TransWorld Media, the world's leading action sports media company. TransWorld is a division of the Bonnier Corporation. Bonnier Corporation ( is one of the largest consumer-publishing groups in America and the leading media company serving passionate, highly engaged audiences through 50 special-interest magazines and related multimedia projects and events. Bonnier Corp. is the US division of the Bonnier Group (, a 200-year-old family-owned media group based in Sweden with business operations in 25 countries.

About Muscle Milk
Muscle Milk® Ready-to-Drink is a protein-enhanced functional beverage that promotes workout recovery, lean muscle growth, and sustained energy. Muscle Milk takes the guesswork out of high performance nutrition, delivering a precise blend of premium proteins, complex carbohydrates, functional fats, vitamins & minerals. CytoSportTM, the maker of Muscle Milk®, is among the largest sport nutrition protein beverage companies in the U.S. and offers a complete line of protein-enhanced powders, shakes and bars. Muscle Milk® was named Ready-to-Drink Beverage of the Year by, Best Functional Beverage, and Beverage of the Year by BevNet and Company of the Year by Beverage Forum presented by Beverage Marketing Corporation and Beverage World.