Wheel SpacerS?

Are wheelspacers safe for jumping, i want to widen my width of tires but i dont want to go out and drob 1$$$ plus dollars on new a-arms and swingarms......yet, so are wheelspacers worth it , if so any suggestions on which ones to get?

I ran durablue graphlite spacers on the front of my quad for a full race/practice season and they held up fine,,they will cause some more stress on your spindles, ball joints etc..but it's either that or spend the $$$$ on a-arms. I don't recommend them for the rear end.

I recomend them for the fron i race MX with my 300ex and they work just fine, dont get them for the back. and dont invert your tires this will cause your a-arms to bend. trust me