Hotchkis Sport Suspension 80413-1 2003-2007 Nissan 350Z Stage 1 Total Vehicle System Kit. The Hotchkis Stage 1 TVS is an all inclusive kit that has been designed and tested as a system. No need to mix and match components. The Stage 1 TVS kit is designed to improve performance on daily driven vehicles while still offering a comfortable ride. Stage 1 kits include Sport Coils and Sport Sway Bars. Sway Bar Specs: Front 1-3/8 in. (35MM) Tubular(Bar Weight 13.5lbs) 4 Position Adjustable Rear 15/16 in. (24mm) Tubular (bar weight 5.5lbs) 3 Position Adjustable Bar Rates:350Z and 03- 05 G35 Front Hole 1 = 1525 lbs/in (22% Stiffer than stock) Hole 2 = 1845 lbs/in (48% Stiffer than stock)Hole 3 = 2270 lbs/in (82% Stiffer than stock) Hole 4 = 2855 lbs/in (129% Stiffer than stock) 06 G35 Front Hole 1 = 1525 lbs/in (5% Softer than stock) Hole 2 = 1845 lbs/in (15% Stiffer than stock) Hole 3 = 2270 lbs/in (42% Stiffer than stock) Hole 4 = 2855 lbs/in (78% Stiffer than stock) Rear: Hole 1 = 520 lbs/in (80% Stiffer than stock) Hole 2 = 655 lbs/in (125% Stiffer than stock) Hole 3 = 840 lbs/in (185% Stiffer than stock) Hotchkis Sport Suspension 80413-1 2003-2007 Nissan 350Z Stage 1 Total Vehicle System Kit. The Stage 1 TVS kit is designed to improve driving performance on daily driven vehicles while still offering a comfortable ride. 2003-2007 Nissan 350Z 2003-2007 Infinity G35