H&R Porsche 997 Carrera Sport Springs HJS Catalytic Converters Start the engine and test

Start the engine and test the system for leak-free and stable performance

Carbon Fiber Patented Venturi Filter Housing

This product includes an ECU Tuning Upgrade

All necessary hardware is included

H&R Porsche 997 Carrera Sport Springs HJS Catalytic Converters Start the engine and testEvery 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