BMW 3 Series E46 (1999 - 2006) Rear Subframe Front Bush - PFR5-4610M3 The new lower half of the bush is made using our Purple Shore A 80 material to provide extra support for the rear axle, whilst the upper half remains in our Yellow Shore A 70 material for optimum NVH absorption. - NOTE: Price is for CAR KIT, NOT per bush… Powerflex price their bushes individually, but we have combined the quantities to make it simple!