Ok, lets get to this. I am an Arizona resident and with the heat of the summer months upon us, i invested in the UltraCool Reefer – 2. First ride with the installed unit was at its best, outstanding. i had no rear cylinder shut down within city traffic and climbing to an elevation of 9000 ft., the fans came on, kept the bike running smooth and cool. Friends that ride with me are also investing in this product. THANK YOU ULTRACOOL!!!