Audi A4 / S4 / RS4 A4 / S4 / RS4 B5 (1995-2001) Rear Differential Crossmember Bush - PFR3-127 PFR3-127 is crafted from our signature Purple 80ShA material, fitting both mounting positions and thereby reducing drivetrain deflection while preventing unwanted twisting at the rear of the differential. - NOTE: Price is for CAR KIT, NOT per bush… Powerflex price their bushes individually, but we have combined the quantities to make it simple!