4" to 4.5"

i knew this one but it still 4"" i am looking fo a kit where the bolt pattern change to 4.5"

I believe there is a typo in the ad, see the "Bolt Pattern5x4 in.& "
I think they left off the "5x4.5 in. "

A few members bought this set and the rotors have both patterns.

See here:

http://www.ssbrakes.com/commerce/detail/index.cfm?nPID=8556