Mini R58 Coupe (2011 - 2015) Upper Gearbox Mount Insert (Diesel) - PFF5-225R PFF5-225 Upper Gearbox Mount Insert fills the voiding in the OEM gearbox mount, reducing engine and transmission movement for sharper gear changes and more precise and settled transmission response during acceleration and deceleration. PFF5-225R Upper Gearbox Mount Insert (Diesel) is made from our softest Red 65A material, specifically designed to minimise NVH transmission. Recommended for unmodified Diesel models or for drivers who want a subtle improvement in driving feel without compromising comfort. - NOTE: Price is for CAR KIT, NOT per bush… Powerflex price their bushes individually, but we have combined the quantities to make it simple!