Fiat 124 springs come in several rate and height choices as further explained in the Fiat 124 spring product descriptions below. In general, the Progress Fiat 124 springs have proven most popular here with street drivers for many years thanks to their combination of reasonable cost, mild rate increase, and mild lowering. The higher rate RoadsterSport Fiat 124 spring kits have proven most popular with the track users and autocross customers who have the stock Bilsteins (or those adding KONI Sport shocks). We generally recommend Koni adjustable Fiat 124 shocks be matched with RoadsterSport Fiat 124 springs below (or be used with the factory Bilsteins). Our autocross Fiat 124 shown here with KONI Sport Shocks and our exclusive RoadsterSport Fiat 124 Springs.