390 fst kit?

[2k2-300exnj]

how is the 390 kit from fst does anyone have it is it reliable and how much plus what are some downsides ok thanx :devil

[330exracer]

well i would believe its not nearly as reable as stock because you just raised the 100cc more. and see would prolly be extremely hot etc. so i don't do it unless your rich because she'll break down allot and you might just break a case or two. o yah thier around i would think 2-3k cause my350 kit is gonna cost 1000-1500

[300EX-Man]

hey how reliable and how fast is your 330 330exracer
do u rip apart a stock 400ex