Nerf Bars on Open Wheel Vehicles

[Brosho]

At what point or time in Offroad Desert Racing, were the rules changed, where the open wheeled buggies are not required to have nerf bars on the sides of the vehicles?

I have noticed that I rarely see the bars on the sides of open wheeled vehicles, mainly in Class 1.

Are there Pros and Cons to having nerf bars on the sides of open wheeled Offroad Desert Vehicles?

[SPONSOR]

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[TauMau]

Cons: They look funny and add weight

Pros: They make a nice footstep.