I have a 2004 Dazon 150 for my son. I think the product is the best in the industry. I have had it out to Pismo Beach this past July and it did good. I realize it is not designed to be in the heavy dune areas, but it did pretty good. I have all the hop up items I could get, jet kit, White Bros pipe, Uni filter. I was running hauler paddles on 8 inch rims. He got good torque but it was a little slow at top end. I will be heading out to Glamis on Nov.12th and then at Thanksgiving. I already know I want to do some engine work, just not sure what I'm going to do. Any ideas?