rotors and adaptors...

trail jacker
trail jacker Posts: 844
edited October 2010 in MTB buying advice
Hi all,
I have a 185mm avid j5 up front but im going to replace the rotor with a superstar one (flame design). the rotor is 180mm, will this be ok to just go straight on, or will i need to buy a new adaptor since there is 5mm difference?
cheers!

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