Spoon Sports Engine and Gearbox Mount SetThe factory, mass produced, liquid sealed S2000 engine mounts are excellent for compliance but compromise on performance. Spoon's Engine & Gearbox Mount Set uses a hardened rubber, which increases rigidity without compromising vehicle driveability. The effective hardness is increased to 70, up from the factory 55 and the spring constant of the bushings from 6kgf mm to 14kgf mm. As a result of these changes, sharper steering and response is noticeable