Eibach spring kit : Pro-Kit BMW M3 (F80) / M4 (F82/F83)
https://www.rtec.ws/shop/e10-20-031-09-22-eibach-spring-kit-pro-kit-bmw-m3-f80-m4-f82-f83-30124
https://www.rtec.ws/web/image/product.template/30124/image_1920?unique=39dd7d0
Reference :
E10-20-031-09-22