Allot of guys run the hardcore heads. They are very nice quality but they are not good for your engine. It is way to easy to go past the fine line with the hardcore head. Most guys that run them have premature engine failure due to over leaning of the engine. The best possible head is a modified rz head or the new head that comes on the new rg after that I would have to say kingheadz. The hardcore heads simply cool to well and it takes much much longer for the engine to get up to operating temps to make pre race tweaks.
Hi guys, I have a rg also. The question I have is when I run my buggy and let off of the throttle it takes a while for the engine to idle, it just sits there reving high for a while before it begins to idle, does anyone know what the problem is?