These are the Ultimate Racing 1/8 off-road insert rubber bands. These rubber bands have been manufactured to fit into each of the insert grooved lines. Once fitted, the insert is practically fixed to the rim. In this way, the insert is prevented from moving in lateral grips, improving stability in fast corners.
It also prevents the insert from centrifuging and thus helps the tire centrifuge less. By centrifuging less, the car becomes much more stable under acceleration.
They can be used on most inserts, wheel brands and compounds, but their effects are greater on soft compound tires.
Depending on whether we want the insert to be more or less fixed, they can be used in all three grooved lines, in two or only in one.
They are sold in bags of 50 pieces so that we can assemble from 4 to 12 complete cars depending on the amount of rubber bands that we use per insert. Once the life of the tire is over, they can be reused as many times as you want.