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Replaces weak factory pipe (part number 6C3Z-6C640-DA)
R231 SL - All models from 2011 onwards
Pro GUARD D2 Synthetic Gear Oil: This competition proven formulation utilizes a group IV synthetic base along with a proprietary additive package that reduces drag
High quality plastic housing seals directly to the factory hood scoop
It never needs cleaning or re-oiling—just replace it when it’s time
H&R 60mm ID Single Race Spring Length 140mm Spring Rate 110 N/mm or 629 lbs/inch - RF140110 fits_2011-2017`Mercedes-Benz`CLS63 Replaces weak factory pipe (partH&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
