Im sure its age, and where you live dictates the cost
I know when I was still new riding my sport bike had to be around $1800 per year
they claimed it was because it costs a lot to replace the plastics if you crash it
I may have only had a couple years worth of riding back then
I'm paying $188 per year, $200 deductible full coverage through geico
on bikes I have liability on I only pay around $10 per year
I think I've been riding for around 13 years now
this is my newest bike, and is higher then my 2012 too
I was sort of hoping because of small engine size it would be cheaper