Gear Protector??

[Rooster]

Hi Guys..
Is there any aftermarket gear protectors for the Lazer??
Or is it only to "D.I.Y."??
Today, after about five minutes of driving the familiar sound of sand eating my maingear was heard all over the track .. I´m kind of new to the 1:10 EP stage so I´m not sure what´s common. Is that the way it´s supposed to be, tha main gear working as a vacum cleaner???

Put me in the right direction..

Peter