Our brass bushings eliminate caliper twisting caused by the rubber guide pin bushings. Precision machined brass guide bushings and Military grade retaining clips allow your calipers to squeeze evenly on both sides of the brake rotor, resulting in much longer pad life and more consistent brake pedal feel. These are a must if you race your BMW. Fits all front and rear BMW factory sliding single calipers made by ATE. Contains: (4) Brass Guide Bushings, (4) Snap Rings. One set required per axle. Fitment: All front and rear BMW factory sliding single calipers made by ATE. Will not fit the following front calipers: E30 318/325 Girling front calipers E28 M5 front calipers E24 M6, 850csi front calipers E9x 335d, 335i, 335is, 335xi & M3 front calipers E82 1M & 135i optional front 6-piston calipers, E60 525i, 525xi, 528i, 528xi, 530i, 530xi, 535i,535xi, 545i, 550i or M5 front calipers. Requires periodic lubrication.
