H&R 2.5 inch ID Single Race Spring Length 6 inch Rate 850 lbs/inch - R25060850 fits_2004-2012`Volvo`S40 Mufflers Produces a Mellow Sound

Mufflers Produces a Mellow Sound While Eliminating Exhaust Drone

Neodymium Magnetic Drain Plug for Gear Protection

Finishing off this exhaust system are dual 4-1/2 IN diameter carbon fiber stainless steel clamp-on exhaust tips

The Magnum Force Open Intake eliminates hidden restrictions to unleash your engine’s full potential

Constructed from 2-1/2 IN - 2-1/4 IN Mandrel-Bent 304 Stainless Steel Tubing

H&R 2.5 inch ID Single Race Spring Length 6 inch Rate 850 lbs/inch - R25060850 fits_2004-2012`Volvo`S40 Mufflers Produces a Mellow SoundH&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