So I purchased a set of front Arashi brand wave rotors for my 954 and installed them thinking they were the correct size. Long story short, they measure 310mm in diameter instead of the 330mm that my bike requires. Didn't find this out until i put some miles on them (literally only like 100 miles). I saw somewhere that the 310mm rotors would fit a 900RR but wanted to make sure. If they do I'll have a barely used set up for sale.

 

310mm will work up to '99