Rev Motoring Audi A4 A3 S4 B6 B7 Snub Mount Race Duro 02-08 Exclusive flat areas on the top and bottom provide optimal contact. Made of high grade polyurethane right here in the USA. 85A durometer is extremely dense and optimal for hard driven cars. 2mm oversized to provide optimal contact and limit engine movement, prolonging the life of the expensive side motor mounts.