I use DNA OVI-5400 filters on the sets I sell, that part number is for one
They normally sell them in sets of 4 and that part number is DNA OVI-5404
Because of their shape you can turn the right side filter 90 degrees and it clears the side cover better, on a 1000 x 180 degree triple
Work well on the 750 engines as well as their shape follows the angle of the upper frame rails
I find the Chinese knock offs to be too slippery and they tend to fall off, you need to rough the ID up where they clamp on
750 Mikuni conversion