H&R 60mm ID Single Race Spring Length 160mm Spring Rate 260 N/mm or 1484 lbs/inch - RF160260 fits_2008-2015`Mercedes-Benz`C63 Flows 28% better (Closed Valve)

Flows 28% better (Closed Valve) and 17% (Open Valve) Better Than Stock

The SL5270-01W Bumper Light Harness is your ticket to doubling the brightness—enabling two additional LED lights for maximum visibility and bold style

High-Gloss Automotive Clear Coat

eliminating a common source of leaks and overheating

2004-2010 Chevrolet Silverado 2500 HD 6

H&R 60mm ID Single Race Spring Length 160mm Spring Rate 260 N/mm or 1484 lbs/inch - RF160260 fits_2008-2015`Mercedes-Benz`C63 Flows 28% better (Closed Valve)H&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