H&R ID Race Springs (60mm Free Length, 143 lbs/inch Rate) qa1-mod-series-level-3-full-vehicle-handling-kit-and-axle-with-narrowed-9-in-housing Yellow Speed Racing Premium Competition

Yellow Speed Racing Premium Competition Coilovers for the 2004-2013 Audi A3 Quattro (8P) deliver race-ready performance for track day enthusiasts

2017 Ford Mustang w/Magneride RWD (S550)

The ISC Suspension N1 V2 Coilover System for the 1997-2003 BMW 540i 5 Series RWD (E39) is the optimum suspension tool for improved handling for your street or weekend track car

2018 Hyundai i30 Wagon 1

2024 Genesis G70 (M3)

H&R ID Race Springs (60mm Free Length, 143 lbs/inch Rate) qa1-mod-series-level-3-full-vehicle-handling-kit-and-axle-with-narrowed-9-in-housing Yellow Speed Racing Premium CompetitionH&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