A great place we have gone to for all of our ATV Engine building is Dave Moore Racing.  Dave is a great ATV Engine Builder. He has so much expertise in this type of work being a machinist for 25+ years. If you are one who loves going to the sand dunes and racing you will be very happy if you have your engine built by Dave.  In my opinion he is the top Motor Builder for ATV’s.  Sure you can spend more money elsewhere but if you want to go fast then you much checkout DaveMooreRacing.com

I have seen some of his Banshee motor builds and they run very strong compared to other engine builders.  If you think about it having over 25 years of porting experience it will pay off.  I have also seen some of his 250R motor builds and they run very hard.  Dave Moore is the king of 2 stroke motors.

Maybe you are looking for a extended swing arm for your 4 wheeler.  He can extend any swing arm.