Hello ladies and gents, I sure am glad I've found your site. I'm new to the motorized bike world and I've got a problem that i hope someone can help me with, I LIVE IN CALIFORNIA and i can't just use any engine. I need to find a 4 stroke motor that is 1.9hp or less and is CARB approved ( California Air Resources Board ). California has placed alot of restrictions on small engine emissions the last couple of years. So far the only motor I've found that is CARB approved is the Honda GX35, but i was hoping you might be able to give me a few more options. Thankyou in advance for any help you can provide.