You're talking about front upper strut mounts? DX mounts have a rubber bushing so you probably got the wrong part at the dealership.
Mazda used stiffer bushings to match the increased spring/damping rates of the MSP. Therefore it's adviseable to do the same when uprating stock Protege suspension. The DX mounts aren't up to the task. At $47 for each MSP mount, it's not much of an investment.
Mazda used stiffer bushings to match the increased spring/damping rates of the MSP. Therefore it's adviseable to do the same when uprating stock Protege suspension. The DX mounts aren't up to the task. At $47 for each MSP mount, it's not much of an investment.