H&R Race Spring (Linear) - ID: 2.5" / Length: 8" Spring Rate:300 lbs/in The N1 ExV's threaded-body design

The N1 ExV's threaded-body design enables precise ride height adjustment without compromising shock or spring travel

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The ISC Suspension N1 V2 Coilover System for the 2014-2017 Mazda 3 Sport (BM) is the optimum suspension tool for improved handling for your street or weekend track car

H&R Race Spring (Linear) - ID: 2.5" / Length: 8" Spring Rate:300 lbs/in The N1 ExV's threaded-body designH&R 2. 50 I. D. Race Springs are made with extremely high tensile strength wire alloy which allows the use of a thinner wire thickness. Manufactured using advanced materials and precision technology in Germany, H&R 2. 50 I. D. Race Springs are crafted from special lightweight (hf) 54SiCr6 spring steel. For any given spring rate, they are on average 15% lighter and have 10% more travel than competitors springs. Main springs range from 6 to 16 in length