Quick Overview Bolt on replacement for stock brakes, no modifications necessary High temperature EPDM rubber dust boots and premium silicone lubricant is used for a smoother operation and an extended life in extreme conditions New seals, caliper guide pins, dust boots, bleeder screws, stainless-steel brake pad abutment clips and mounting brackets All calipers are thoroughly inspected and 100% pressure tested for quality and safety. See below for information on our caliper core rebate program, or find the form on our website! Fits: BMW 320i 2001-2005 BMW 323i 2000 BMW 325Ci 2001-2006 BMW 325i 2001-2005 BMW 325xi 2001-2005 BMW 328Ci 2000 BMW 328i 1999-2000 BMW Z3 2001-2002 BMW Z4 2003-2008