Max Sport used to be a Co-Sister company of Intrax.

The "IX" is the Race or Sport Identification of the spring (not sure which it is) and the numbers are only there as a part number to the company.

They have been out of business for a couple years, So there's no way to track down what the details of the springs are.

"Sport" Usually means 1.5-1.8 drop.
"Race" Usually means 2.25-2.5+ drop.

Maybe you can measure the height of your springs vs. a stock Honda Spring and determine the what catagory they may fall under.

JFYI, I had these same brand springs on my Integra back in '00 and loved the way the handled.
I had the "Race" series which dropped the car 2.25"{R} & 2.5"{F}



G/L with your sale, Sorry I couldn't help more.

-Jeff