ApplicationCompatible for NISSAN 350Z coupe2003-2008 USA (Z33) Compatible for NISSAN 350Z ROADSTER convertible 2003-2008USA (Z33 ) Compatible for INFINITI G35 COUPE 2003-2007USA(V35) RWDCompatible for INFINITI G35 SEDAN 2003-2006USA(V35) RWD Note: (not for G35X sedan)Specificationdaily driver, occasional autocross day or occasional track days.Top mounts: pillow ball top mount front and rear.Damper: non-adjustableSpring rate: front:10kg/mm (560 lbs/in) ;Rear: 7kg/mm (392 lbs/in).Adjustable height: Yes lowering 1\'\' to 3\'\'.Shock type: Twin tube.Spring Preload: 7-10 mm.Color:gold.Warranty: one year.Product included: complete coilovers 2 front and 2 rear（Split rear shock absorber）; a pair wrench for height adjustment .Gross weight: 26.24kgPackage size: 70*50*19cmFeature- Able to lower ride height by 1\'\'-3\'\'; allows user to have a more aggressive stance.- The user can enjoy a comfortable riding experience in all road conditions.- Pillow ball top mount -- this design helps combat noise while tuning. It also improves the steering feel and response- Twin-Tube Shock design is used for low internal frictional resistance in order to increase efficiency and keep shock temps low. - Height adjustment does not sacrifice damper stroke length. - These coilovers are able to have their height adjusted without being taken out of the car.- High Tensile strength performance spring---Tested under a 600,000 time continuous compression test, the spring distortion was less than 0.04%. Plus, the special surface treatment improves the durability and performance.- Adjustment tools included in the kit.NoteNo instruction included; Professional installation & alignment suggested.Please check your car information before purchase. If you are not sure, please contact us for help！”No drilling, cutting, or modification necessary.SPECIAL NOTES: Prior to installation, verify all hardware and properly tighten.