Heavy duty polyurethane gearbox mount for S13, S14(a), S15 HCR32 and A31.

This mount is a direct replacement for the standard item, but is much stiffer, holding the engine and gearbox steady.
This gives a more direct feel and sharpens up throttle response as you're not waiting for the tired and sloppy standard mounts to twist and compress before turning the propshaft.

These Polyurethane mounts are quite a bit stiffer than the stock ones, so hold things tighter, but will transmit more noise into the cabin as a result.