BC Racing ER Coilovers for Nissan S15 240SX 1999-2002 D-27-ERSupplied in default spring rates, at the time of writing are: 10 8KG Please note that these may be adjusted by BC based on customer feedback, if you require a specific spring rate, please contact us. LISTING IMAGE IS GENERIC Our External reservoir ER Series comes with separate compression and rebound damping adjustment. The ER Series coilovers bring with them the high quality and unique features seen on the BR Series and RM Series but have the