Hotchkis Sport Springs 03-07 Infiniti G35 Coupe - P/N: 19413 Product Model: HOT-19413 Hotchkis Tuning Sport coils offer the performance you seek, and the comfortable ride you deserve. Made from cold wound silicon steel, our springs are linear rate, and are powder coated seabring silver. Front Front 9/16" (15mm) Drop 340 lbs/in Stock 310lbs/in Rear 3/4" (19mm) Drop 330 lbs/in Stock 350 lbs/in Item usually ships in 3-5 days.