Welcome to the forum Dahlia!
You've a fine scooter!
Kymco accessories are HTF - esp. in the U.S.
Look at ebay Tawain, Spain, Italy etc. for a broader selection.
While the brakes and engine may be able to cope with a bit more weight - with obvious consequences in belt & clutch wear, stopping distances, etc. - the weight on the suspension, bushings, frame components, steering bearings, etc.. etc. have been engineered by the manufacturer to be safe and durable at their posted figure.
Many say that the manufacturers work hard to CYA by posting figures well under the actual capacity of a vehicle. (a heck of a lot of small automobiles are "overloaded", per the axel figures, on their way to the airport with the family and luggage!)
Is there a way to confidently/safely raise the carrying capacity of a scooter?
No.
But...
Ride at the upper limit of the PSI
listed in the owner's manual (
NOT the figures found on the tire!)
Buy a larger scooter - after checking its weight limits. Surprisingly - some big scooters do not recommend a carrying capacity very much high than that of a 150/200cc scooter!
A
heck of a lot of scooter riders are (per the manual) overloading their scooter, and I'd hate to see the % of those when they add a passenger. Riders in say, Asia - a whole different story!

Kymco parts from your dealer - or mail-order. See some suggestions in stickies/ General Discussion. Exploded parts lists are very helpful in figuring out how things go together.
There are manuals on line. Google.
www,cyclepedia.com is one I use.
Again, welcome!
Stig
pictures are welcome - esp. for us illiterates....
