H&R BMW F83 M4 Cabrio Sport Spring Carbon Fiber H&R Sway Bars are formed

H&R Sway Bars are formed perfectly for each and every application

Designed to boost acceleration

Threaded body allows accurate adjustability of the front and rear progressive spring rate springs to achieve the perfect ride height and center of gravity

Frequency Intelligent Valvetronic Exhaust System technology offers our cutting-edge intelligent ECU exhaust control valve

H&R BMW F83 M4 Cabrio Sport Spring Carbon Fiber H&R Sway Bars are formedEvery spring produced by H&R comes from the H&R ISO 9001 certified engineering and manufacturing facility in Germany. All H&R springs are produced from a special 54SiCr6 spring steel, which has strength rated at 290,000 psi resulting in unrivaled tensile strength and resiliency. H&R Sport Springs offer the handling characteristics and aggressive appearance that youve been looking for, without the harsh ride characteristics of less advanced spring