BC Racing Coilovers - ER Series Coilover for 04-13 Mazda 3 (N-03-ER) r34sbvc So why make one work

So why make one work with the other and be restricted with the tiny original donut gasket/ with OEM dimensions

17801-46090

Installs in minutes with included polished mounting hardware

Reliable Connections

CAD designed to be lightweight but very strong for years of abuse

BC Racing Coilovers - ER Series Coilover for 04-13 Mazda 3 (N-03-ER) r34sbvc So why make one workBC RACING ER SERIES COILOVER KIT 04 13 Mazda 3 Part Number: N 03 ER EXTERNAL RESERVOIR ER SERIES BC Racings premium flagship coilovers are the external reservoir ER Series with separate compression and rebound damping adjustment. The ER Series coilovers bring with them the high quality and unique features seen on the BR and RM type but have the additional benefit of external reservoirs and the ability to allow the end user to individually adjust and