First. Pre-Hydrate the day before! Stay away via alcohol! Ok just kidding about the alcohol but alcohol does effect your own body's efficiency to manage heat up! Actual motorcycle AC systems are very few and far between and incompetent. There lots of great alternatives. Some work better than others! Misters are a good way to remove some heat to get an asset cooling feeling in dry climates with zero humidity! Evaporative cooling systems are only feeble if the normal water can evaporate. If your home is in Vegas or Houston Texas with 100 percent humidity don't waist your hard earned dollars. These systems just make you wet or really wetter as you're are sweating profusely!
Another benefit is the ice gel vest for you to put in your freezer magically! These actually have real heat absorption sort that should keep you cool for a small time. Once them melts, or the gel pack are heated by your body it becomes an important warming vest! For about two hours these are typically effective. The only problem is you need a freezer to regenerate your cooling effect.
There is one low powered vest on the market that can cool right through the day! This Vest is with a small cooler which drop into your saddle bag. You fill the cooler with ice and your pleasant beverages. When you will enjoy on the bike, the vest plugs into the cooler with a little tether. The unit solely draws 2 amps and plugs into your solar battery tender connector. The Vest cools to 65 degrees for up to 4 hours. Then it is time to get gas on your bike, Just grab a new bag of ice. It's the only program that can ride as long as you want with renewable resources you find on the streets! No need to bring your freezer to you!
This is how I stay cool on the streets! I still may have got a few beers too!
Clayton