Audi A1 / S1 (2010 on) A1 GB (2018-on) Gearbox Mount Insert - PFF85-1823BLK PFF85-1823BLK acts to stiffen the voiding of the OE mount, helping to restore a level of responsiveness expected from a hot hatch. Made using our Black 95A durometer material, it provides a no-compromise performance option for track-focused builds. A small increase in NVH, usually at idle should be expected when stiffening the mounting between the engine/transmission and chassis. The harder the material used, the greater the NVH transmitted. For total drivetrain control, this new insert is the perfect accompaniment to PFF85-1821BLK Upper Engine Mount Insert and PFF85-1822BLK Upper Engine Mount Insert. - NOTE: Price is for CAR KIT, NOT per bush… Powerflex price their bushes individually, but we have combined the quantities to make it simple!