Mojave Magnum #4 requirements on Apr 9, 2016 (717966) | MotorsportReg.com

Entry is limited to 120 participants each day.  Open to both cars and motorcycles. Open to licensed drivers/riders 18 years of age or older (sorry, we cannot allow minor drivers or riders).  Motorcycle riders must have a motorcycle endorsement on their driver's license. Basic safety equipment (belts, helmet, proper clothing, etc.) is required.  3-point OEM-type seat belts are the minimum for cars. All motorcycle riders must wear a minimum of full leathers/boots/gloves and a full face helmet with face shield. Helmets that are only rated DOT, with no other rating, are not allowed. Snell-rated helmets older than SA2005 and M2005 are not allowed. Snell K (kart) helmets not allowed.  All vehicles must meet our safety standards and be in good condition. Tires must be at least "S" speed rated (hopefully higher, because your speed limit depends on it!) and manufactured in 2010 or later (i.e., the 4-digit sidewall date code must end in 10 or higher).  Graduated speed limits apply to each entry, based on safety equipment, tire ratings, and prior race experience.  Other restrictions may apply.  See the FAQ, Car and Bike Preparation Guides, and Rule Book on our web site for details.