H&R 04-07 BMW 525i/530i E60 Sport Spring (w/o Self Leveling) f10 Optimum OEp: R: 2551-1372-00

Optimum OEp: R: 2551-1372-00

*Features* * Extreme Performance Meets Extreme Style * Race-Car Like Handling * Lower than our Pro-Kit

N54 charge pipe for e9x cars

Offered as a set of 2 and come in 3 sizes 10mm

Our head port plug kit prevents boost pressure from entering the valve cover on the n55 where boost leaks can present themselves at the valve cover or internal diaphragm

H&R 04-07 BMW 525i/530i E60 Sport Spring (w/o Self Leveling) f10 Optimum OEp: R: 2551-1372-00Every 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