RS-R SUSPENSION DOWN REAR FOR NISSAN DAYS ROOKS B21A FF N520DRBrand RS R Product Number N520DR Compatible Car NISSAN DAYS ROOKS B21A FF Product Description Model Year: 2014 2 ~ ENGINE CAPACITY: 660 NA Series: RS R DOWN set: R down width (mm): 45 ~ 40 spring rate (kg mm ): 2. 31 matching grade: Model Year: 2014 2 ~ ENGINE CAPACITY: 660 NA Series: RS R dOWN set: R down width (mm) : 45 ~ 40 spring rate (kg mm): 2. 31 matching grade: Model Year: 2014 2 ~ ENGINE CAPACITY: 660 TB Series: RS R DOWN set: R down width