H&R BMW F83 M4 Cabrio Sport Spring Carbon Fiber This cover features 2x2 twill

This cover features 2x2 twill weave carbon fiber with a matte finish

All H&R Sway Bars are built on specialized machines designed by H&R — the only way to ensure an exact fit and incomparable performance in every application

1% tolerance on components in critical areas

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

independently functioning damping power adjustment

H&R BMW F83 M4 Cabrio Sport Spring Carbon Fiber This cover features 2x2 twillEvery 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