is White Brothers R4 Exhaust a good system?

[new400exrider]

is a white brothers r4 exhaust good? can anybody tell me about them like how they sound and perform. thanks

[tp300ex]

they are realy loud and unless ur buying from somone on ebay or something thin u wont get one cuzz they stopped making them

[new400exrider]

yeah thats wat im doing so are they good