Well, these are not technically suspension, but they do act to stiffen the engine lower wishbone like a suspension. So we’ve listed them here in the suspension section.

4C specific urethane insert to fill the voids in the original rubber engine mount. This is the black “race” spec hardness bushing which best suits the 4C as an upgrade.
These urethane inserts take up the spaces in the stock rubber bushing. You do not have to remove the bushing or arm to install. Simply pop these into place for an easy and hassle-free upgrade.

The stiffer urethane works with the stock rubber to reduce movement and deflection. Inserts are an effective way of reducing engine and transmission movement, improving power delivery and sharpening gear shifting. Inserts can also prolong the life of the stock bushing now that it cannot flex as much. A urethane insert is also included to take up the excessive gap in the factory mounting bolt.
Fits in the original Alfa Romeo engine mount, OEM part numbers 50521924 and 50521925.