UPDATE
Its been quite some time now.
My bike has about 6k-7k miles on it
(longest lasting old style engine i had was 4k miles)
This kit has EXCEEDED my expectations, absolutely no mechanical problems(except the low grade battery i replaced and those crapy nt carbs(always leaked)
Only one complaint, the paint has cooked to a shaty brown color other than that i must say im very very pleased with this thing i got headlights, taillights, stobe lights, horn, 1000 watt stereo system, a car lighter port and 2 usb slots for charging all sorts of batterys and devices (im a RC guy)
I use ALL of this and theres absolutely no power loss in my engine power.
I recommend this kit to anyone whos interested in Motorized Bicycles