310mm, 320mm and 330mm can be used on 04-07 forks and brakes... Just use right size spacers....Just know that the OEM size for your RR5 is 310mm which is compatible with the RR4. I'm going thru a fiasco because I decided to fit Arashi rotors and discovered the style I want, the seller was unable to get in the size I need.
Your forks have 5mm spacers between forks and brake calipers. Put there by Honda when it was put together at factory. Take them of and you can use 310mm discs. Get similar 10mm spacers and you can use 929-954 330mm discs...Getting and swapping said spacers then becomes the game. No thanks for me. In the case of the OP, maybe. The OP will save 1.2lbs on the change.