All of you two smoke ours should thank the manufacturers (namely Yamaha) for putting some serious investment in 4 stroke developement. With the eco-nazi regime (US Government) at the helm, your two smoke riding time is limited at best. I know high-pro 4 strokes still do not meet tough EPA standards, they are MUCH closer than any two smoke. I'd rather ride a heavier 4 stroke and not ride at all. I hate to say it however; this isn't too far from the truth.