I just put on a Rated - X Steering stem, +2 and Fasstco Flexx Bars ATV Bend, tell you what for the price the Rated - X Stem is high quality, the clamp is second to none, the anti vibe factor is huge. Needless to say I am very happy with the setup, you can get the bar and clamp for under $300. There is a link below, I got mine from PDR, link also below, contact Diesel, he will hook you up on a deal, takes a day to ship out. I was going to buy the Lone Star Stem, or the Houser Stem, he carries both, he swayed me towards the Rated - X Stem, and I am glad he did, cheaper price, just as good if not better quality.
http://ratedxmotorsports.com/Category.aspx?cid=171
http://www.performancedesignracing.com/