Originally Posted by B-DAWG
Why because the foam bumper is cut?
It's not a good idea to cut the bumper like that. The reason is because you are not protecting the front wheels with a narrow bumper. It's common for the pillow balls to pop out of the front uprights on impact. But with the longer bumper, this seems to happen less often.
Also, I guess because of the price of a Mugen, you won't see too many people put rubber tires on one. Most people buy a Mugen strictly to race which means foam tires. Although I see you do have a tranponder so do you race a rubber tire class? Anyway, to each his own, in my opinion. Just go have fun with it.