H&R 2.5 inch ID Single Race Spring Length 10 inch Rate 900 lbs/inch - R25100900 fits_2009-2013`Mazda`6 Unlike the degradation-prone stock 2015-2017

Unlike the degradation-prone stock 2015-2017 Mustang rubber hoses

Except Type-S

Designed specifically for the 2012-2016 BMW 328i (F3X) 12-16 L4-2

Aside from being more durable than stock

This intake has a unique and aggressive tone

H&R 2.5 inch ID Single Race Spring Length 10 inch Rate 900 lbs/inch - R25100900 fits_2009-2013`Mazda`6 Unlike the degradation-prone stock 2015-2017H&R 2. 50" I. D. Race Springs are made with extremely high tensile strength wire alloy which allows the use of a thinner wire. 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 18" in length and