HARDRACE HARDENED LEFT SIDE ENGINE MOUNT 1PC SET HONDA CIVIC SI 4DR 06-11Reinforced transmission mount made by hardness rubber create more strength than OE rubber mounts, reduce gearbox move significantly, and provide the maximum output under gearbox acceleration.. Offers a more direct connection between the Drive train and Chassis. Increasing the life span. Helps to put power down to the wheels. Increased stability during cornering and acceleration