Fitment Information Nissan 350Z Z33 (2003, 2004, 2005, 2006, 2007, 2008, 2009) Infiniti G35 Coupe V35 RWD (2003, 2004, 2005, 2006, 2007) Infiniti G35 Sedan V35 RWD (2003, 2004, 2005, 2006) Specs & Features 40 way adjustable dampers (soft to firm) True Rear: Spring Rate: Front: 12 kg/mm (672 lbs/inch) Rear: 10 kg/mm (560 lbs/inch) Front camber plates: No Divorced: Spring Rate: Front:  10 kg/mm (560 lbs/inch) Rear: 8 kg/mm (448 lbs/inch) Front camber plates: No Includes a full set of 4 52mm carbon steel shock body Monotube Shock 1 Year Warranty from date of purchase Product Description The Godspeed Project MAXX coilovers are for the tuners that want a track oriented setup that also provides daily commute comfort. With 40 levels of damping valve adjustment, you can easily adjust from stiff to soft simply by twisting the knob. Featuring mono-tube design with large capacity 52 mm dia. JIS seamless carbon steel shock body filled with IP F.A. 5W damper oil with properly valved 44 mm internal pistons to endurance competitiveness on a track course or daily spirited driving on public road. Cold wound springs are made from high tensile SAE9252 steel to ensure durability. Vehicle ride heights are adjusted with lower brackets to offer maximum shock travel in order to provide comfort compared to lowering springs alone. Mostly billet aluminum hardware accessories are used for its weight saving property in order to reduced overall weight of the coil-over system yet remain durable. All parts are replaceable and most importantly shock absorbers can be rebuild for customization or simply purchase replacement cartridge without spending too much for complete new coil-over system. You will experience quicker response times, improved bump absorption and increase grip to increase the safety when pushing your car to the limit!Improved Springs Rate To Help Ride Handling And Response 40 precise levels of damper adjustment Mono-tube Design With Anodized Shock Body Lightweight aluminum shock components and T7075 forged aluminum / carbon steel brackets. 52 mm carbon steel shock body with a 44 mm internal piston. Independent ride height and spring pre-load adjustments. Italian IP F.A made shock oil with a high viscosity index. Front camber adjustable plates are included(whereas applicable) 1 Year Warranty from Date of Purchase GodSpeed offers a 1 Year Warranty from date of purchase when purchased from an Authorized Dealer such as Redline360. GodSpeed requires proof of purchase from an authorized dealer.