PRL Honda Civic Si FE1 Type R FL5 Rear Engine Mount Upgrade The core design of our mount is an I-beam, work excellent for mounts and connecting rods because of their resistance to bending, stress, vibration and reflection. We were able to add a significant amount of material to increase rigidity and strength over the factory. All bushings are press-fit into our precision-machined billet 6061 aluminum motor mount assembly. This press-fit connection eliminates any possible gap to ensure that there are no metallic vibrations or noises, allowing the EPDM to absorb any engine or chassis vibration. Bushing shells and center inserts are Zinc-coated to aid in corrosion resistance.
 
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