Originally Posted by THE TECH
Sorry to see you sell these for wheels that look almost identical.
Close but not quite... Here are some back to back pictures...
J12's have meatier spokes and more meat around the center while the FI's have very delicate spokes and the milled out parts are much more aggressive (can't see that here)
The J12's have "straight" spokes with two angles while the FI's start with zero degrees and progressively curve toward the center, giving it a much more exaggerated concavity
From a distance they may be very similar but the FI's are really on a different level.