ACT 2003 Nissan 350Z XT/Race Sprung 6 Pad Clutch Kit
The ACT NZ1-XTG6 is a race-grade clutch for the early VQ35DE Nissan 350Z and Infiniti G35 six-speed. It is built for cars that have outgrown street clutches: turbo or supercharger kits, nitrous, or regular drag and track days where an organic disc glazes and fades. It pairs ACT's highest clamp-load Xtreme pressure plate with a 6-pad sprung ceramic disc, and it gives up some street manners to hold that power.
ACT rates the NZ1-XTG6 at 669 ft-lb at the crank, 83 percent over the factory clutch. Most of that comes from the Xtreme N021X pressure plate, whose heat-treated diaphragm raises clamp load while limiting deflection. The 250 mm (9.8 in) disc carries six ceramic pads instead of a full organic face, which tolerates far more heat and holds harder, and a spring center absorbs torsional shock so the hub survives repeated launches. ACT is clear about the tradeoff: engagement is harsher and more on-off, shifts are faster, and the pedal is moderate to heavy. ACT quotes 50 to 80 percent more pedal effort for its Xtreme plates depending on the car.
A slipping clutch will not log a trouble code, so judge it by a controlled load test and by inspecting the parts.
First check the hydraulics: fluid level, a firm pedal that returns fully, and no leaks at the slave cylinder. Then do a high-gear pull from low rpm and watch whether the tach rises faster than road speed; our slipping diagnosis guide walks through it. If the car is driven mostly on the street at moderate power, a 6-pad race disc is the wrong choice. The NZ1-HDSS Heavy Duty street kit pairs a lighter-pedal plate with a full-face organic disc for smoother engagement, and the NZ1-HDG6 keeps the race disc with the Heavy Duty plate.
ACT lists NZ1-XTG6 for the 2003 through 08/2006 Nissan 350Z 3.5L VQ35DE (Base, Enthusiast, Performance, Touring, Grand Touring, Track and 35th Anniversary Edition) and the 2003-2006 Infiniti G35 Coupe and Sedan 3.5L VQ35DE with the six-speed manual. Late 2006 and newer cars built with the revised engine are not on this chart. Production dates matter here, so check the build date on the door jamb or send us your year and VIN and we will confirm. Other 350Z and G35 parts are in our rebuild kits and clutch section.
ACT notes its discs will not work with the factory pressure plate, so install the disc and N021X plate together as supplied. The flywheel is not included; ACT pairs this kit with the 600215 XACT Streetlite or the lighter 600220 Prolite, or have your flywheel resurfaced. Remove the old pilot bushing and fit the new PB1012, center the disc with the AT01 tool, and tighten the plate bolts a little at a time in a star pattern. Bleed the clutch hydraulics with the fluid marked on the reservoir cap. Ceramic race discs do not need a long break-in; ACT says a few hard slips lap the surfaces in. Expect some chatter pulling away in first and reverse.
| Brand | ACT |
| Part number | NZ1-XTG6 |
| Fits | ACT 2003 Nissan 350Z XT/Race Sprung 6 Pad Clutch Kit |
| Vehicle fitment | Nissan 350Z Xt/Race Sprung 6 (2003) |
| Type | Clutch Kits - Single |
| Condition | New |
| Ships | Same business day (in stock), from the USA |
| Warranty | 1-year |
No. ACT lists it for 2003 through 08/2006 350Z and 2003-2006 G35 with the VQ35DE. Later cars use a different clutch, so check the build date or send us your VIN.
Only if you accept harsh, quick engagement and a heavier pedal. For mostly street use ACT's NZ1-HDSS with a full-face organic disc is smoother.
ACT rates it at 669 ft-lb measured at the crank, 83 percent over the factory clutch.
No. ACT states its discs will not work with the factory pressure plate. The kit includes the matching N021X Xtreme plate.
No flywheel is included. ACT lists its 600215 XACT Streetlite and 600220 Prolite for this kit, or you can resurface your existing flywheel.
Race discs need very little. ACT says a few hard slips lap the surfaces in, but avoid overheating the clutch during that time.
