H&R 60mm ID Single Race Spring Length 140mm Spring Rate 500 N/mm or 2857 lbs/inch - RF140500 Electronic Lowering Systems Includes fully serviceable thermostat for

Includes fully serviceable thermostat for fast warm-up in cold climates and thermostat bypass for constant cooling in hot climates

The Motorsport slat geometry gives the G87 M2's front end a sharper

Hawk Performance HT-10

Front Wheel Drive models are equipped with 6k R spring rates

H&R 60mm ID Single Race Spring Length 140mm Spring Rate 500 N/mm or 2857 lbs/inch - RF140500 Electronic Lowering Systems Includes fully serviceable thermostat forH&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