Whats the best big bore???

[450rdominator]

out of all the big bore kits available, i have no idea on which one to get. i would like to make my 06' 450ER a 500ER...which would be the best big bore kit of all of them to get? No price limitation, just need the best, most reliable and most powerful kit available!

[desratt]

I believe most that sell the 500 kits use a northwest sleeve
their address is something like nwsleeve.com

[Drewltr450]

MY friend just made his 450r a 511 and he loves it he got an icecube stroker kit form http://www.maxpower-engines.com/ they have really good service and have alot of different variates of what size engine u wana make.

[pro-rider46]

falicon has some pretty crazy big bores, you can get a 600 kit for the 04 and 05's, but idk how reliable they are, but they are pricey...