It is not essential in the competition is a brake set for AR chassis.
Sponge brake is cut into 5mm wide. prepared two kinds of different frictional forces.
Resin stays purple color of skid-shaped sponge is hard to peel off.
Speed. etc. lawn section of formula race prevents the down significantly.
During the two-stage roller mounted. it is possible to return immediately even rides on the fence in the landing after the jump. and increase the finish rate.
Also. select a front-rear direction of the mounting position. it can be height adjusted by a combination of screws and spacers.
Small diameter. also supports large-diameter either of the tire.

[Available machine]
MA. AR. Super II chassis