Ultra4 off road racing is an international motorsport series characterized by four wheel drive machines competing on race courses consisting of dirt and rocks and the annual King of The Hammers event held every January in Johnson Valley California. With five different classes each with distinct rules specifications, the allowed modifications can be difficult to observe. In this video series Ian Johnson of @BigTireGarage breaks down what makes each different class unique.
Learn more about Ultra4 off road racing:
www.methodracewheels.com/hamm...
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