you are a fucking idiot. they are heavy?? did you know that a yfz450 weighs less than a banshee. wow, the banshee is heavier. so i guess you are wrong there. and going slow? i bet my 450 would whoop whatever it is on dirt, and prolly give you a real good run on concrete. my 450 has whooped on ported banshee's so i dont think its very slow. so hey, wrong again. the swingarm is aluminum. it doesnt weigh hardly shit. in fact it prolly weighs less than the banshee swingarm. so i think you need to get your info right before you post something ignorant.