Plug, and play they will not last an hour.TRUE. If you clean them up they are fine. Temp. stays the same. These are not racing set ups just bigger bore. I doubt the dealer would do it for you as there are too many ways for it to go bad, and they have no way to re-coup your business if you don't like the result. I do this as a hobby. Like model planes or such. So I have the time/tools/experience to do it. If this is your only transport bring it to a GOOD SCOOTER Mech., and ask his/her opinion.I love my BBK but I also don't care if it blows up. Just something to do besides work. Almost forgot to mention... I have been riding a BBK on my zx for almost 4 years now, and I just put in a bigger kit on the same engine. If you are careful when putting it together it will last as long as OEM. Parts are parts. No doubting what Blue says but if the label says "DO NOT TAMPER" I HAVE to mess w/it.