im looking to buy a longer swing arm for my 300ex.i am hoping to be doing some mx'ing next year and i was wondering what a good size swing arm would be.also would i need to buy a new shock?if yuo could please tell me everything else i need and were i can find a good cheap one would be greatly appreciated.thanks

 

I have a +3" Leager. It work great on my quad, I also have a Works Ultracross rear shock. Don't go cheap you will regrett it. Save your money and get a quality swingarm. You might want to get a +2" without any engine mods.

 

Another cheap upgrade that will greatly help your racing is putting a 400ex set of a arms up front, with 400ex shocks. you will gain about 3" of travel , be about 3" wider and it will make a big difference. ebay is full of 400ex a arms and shocks for cheap, even new, 400ex a arms are about 1/2 the price of 300ex a arms, go figure !! the only other part is 400 ex tie rods, also cheap, even new. The only fabricated part is top shock mounts, you can make your own, buy some off ebay, or have a sport shop fab you up some. Then widen the back end with spacers or a longer axle, and it will ride a lot better.