This vehicle is Pictured with 20mm Front and Rear. GarageLine Hubcentric wheel spacers was used on this vehicle. See the flush look and strong stance.

GarageLine Wheels Spacers are made from billet aluminum turned on a HAAS CNC Lathe and Mill, each component is made with a precision that is unmatched by any competitor. A best of show quality black anodizing is the only finish to stand out better than all of the rest. These are made for the specific customer that wants only the highest quality materials and manufacturing processes.

More Info:

https://garageline.com/honda/465-949-2022-honda-civic-si-garageline-wheel-spacer.html#/29-spacers_size-20mm_pair

Alternate Options would be

H&R

https://hrsprings.com

or

Eibach

https://eibach.com