i copied and pasted this from the dynojet website, thought you might be interested,they also wanted artic cats

Dynojet Research, the leading manufacturer of carburetor jetting kits for the motorcycle industry, has recently introduced a line of jet kits for popular Honda, Kawasaki, Suzuki and Yamaha ATV's. To satisfy customer demand, Dynojet is now looking to develop the same performance-enhancing products for more ATV makes and models!

If you live in or near Las Vegas, Nevada, and are willing to leave Dynojet your ATV for a few days, we will use it to develop ATV jet kits and subsequently install the kit for FREE!

All we ask is that your ATV have all stock drivetrain components and represent one of the following models:

POLARIS:

500 Scrambler
500 Sportsman EBS
335 Sportsman EBS
425 Magnum 4x4
425 Magnum 2x4