PN32004 DISC PAD SET NiBK JNBK REAR KIT FOR BMW M Series : M3 BMW M Series : M4 BMW 34 21 2 284 766 34212284766 BMW 34 21 2 284 989 34212284989 BMW 34 21 6 855 474 34216855474 BMW 34 21 6 876 422BECAUSE OF THE COMPLEXITY OF BRAKE SYSTEMS IF YOU ARE NOT SURE ABOUT THE ITEM YOU ARE CHOOSING ! THEN EMAIL THE FOLLOWING INFO TO US, TO INVESTIGATE ALL INFO IS REQUIRED, IF YOU DONT, THEN WE WILL JUST DELETE YOUR EMAIL. A) 17 DIGIT VIN NUMBER B) YEAR MODEL + ENGINE SIZE C) ANY OTHER PERTINENT INFOMATION SET INLCUDES 4 OR 8 DISC PADS DEPENDING ON MODEL 1 SET OF DISC PADS WILL DO 1 AXLE (2 WHEELS) QUICK DETAILS > Location Rear Axle Brake Length 1 97. 5