AKG Motorsport E30 M3 Motor & Trans Mount Set, Poly 80A (Group N)Product Description These BMW E30 M3 Poly 80A Motor and Trans Mounts work together to hold the engine and transmission in place for improved power transfer through the drivetrain. They feature our innovative, registered interlocking system making them much stiffer than a normal medium durometer mount without compromising comfort. The exclusive, internal interlocking design makes them the only true aftermarket isolating mounts available, while also