ACT 2015 Nissan 370Z XT/Perf Street Sprung Clutch Kit

The ACT NZ2-XTSS pairs ACT's Xtreme pressure plate with a sprung organic Performance Street disc for the Nissan 370Z with the VQ37VHR and six-speed manual. It is the kit for a 370Z owner whose clutch slips after a tune, intake and exhaust, or forced induction, but who still drives the car on the street every day and wants smooth engagement rather than the grab of a puck disc.

What this clutch kit does in a 370Z

The pressure plate clamps the disc against the flywheel so engine torque reaches the transmission input shaft. The Xtreme plate uses ACT's diaphragm design to raise clamp load, and the 250 mm (9.8 in) disc is a full-face organic lining with high copper content, steel backing and a sprung hub that absorbs driveline shock. ACT rates the kit at 545 ft-lb, 89 percent over the factory clutch. That is a lot of headroom on a naturally aspirated VQ, and it is the reason this kit is chosen for boosted street cars that do not want a race disc.

Symptoms that point to a new clutch

• RPM flares in third through fifth gear at full throttle without matching acceleration
• Burning smell after spirited driving or a steep hill start
• Engagement point creeping toward the top of pedal travel
• Shudder on takeoff or noise when the pedal is pressed
• Soft pedal, a pedal that sticks down or hard shifting, which often traces to the hydraulic release rather than the disc

How to confirm before you buy

Do a steady pull in fourth gear from low RPM: if the tach rises faster than road speed, the disc is slipping. A pedal that feels spongy, stays down or will not release the clutch fully is a hydraulic problem first, so bleed the system and inspect the slave before ordering. Our slipping diagnosis guide walks through the slip test and the flare vs. slip guide explains how to tell a slipping clutch from an RPM flare between shifts.

Fitment

This listing is for the 2015 Nissan 370Z. ACT's application list for NZ2-XTSS is wider: 2009-2020 370Z (VQ37VHR), late 09/2006-2009 350Z with the VQ35HR, the 2008 G35 sedan, 2008-2013 G37 and 2014-2015 Q60. Earlier VQ35DE 350Z and G35 cars use a different kit. The disc takes a 1 in input shaft. Confirm against your old parts or send us year and VIN, especially on cars that have had a flywheel swap.

Install notes

• Kit contents per ACT: N024X Xtreme pressure plate, 3000409 Performance Street sprung disc, PB1012 pilot bushing and AT01 alignment tool. There is no release bearing in this kit, so inspect or replace the release assembly while the transmission is out.
• Have the factory flywheel resurfaced to a clean, flat face, or upgrade to the ACT 600590 Streetlite flywheel that ACT offers for this application.
• Install the new pilot bushing, center the disc with the alignment tool and torque the pressure plate bolts gradually in a star pattern to the Nissan specification.
• The clutch hydraulics draw from the brake fluid reservoir. Bleed thoroughly with fresh fluid of the grade marked on the cap.
• ACT notes that Xtreme plates raise pedal effort roughly 50 to 80 percent. If you want a lighter pedal, compare the NZ2-HDSS Heavy Duty kit.
• Break in the organic disc for 300 to 500 miles of mild, stop-and-go engagement before launches or track use.

Does the NZ2-XTSS include a release bearing?

No. ACT lists the contents as the N024X pressure plate, 3000409 sprung disc, PB1012 pilot bushing and AT01 alignment tool. Inspect or replace the release assembly separately while the transmission is out.

How much torque does it hold?

ACT rates it at 545 ft-lb, which is 89 percent over the factory clutch, using a 250 mm organic sprung disc.

Will the pedal feel heavier?

Yes. ACT says Xtreme pressure plates increase pedal effort by roughly 50 to 80 percent depending on the application. The Heavy Duty NZ2-HDSS is the lighter-pedal option.

Does it fit a 350Z or G37?

ACT lists it for 09/2006-2009 350Z with the VQ35HR, 2009-2020 370Z, 2008 G35 sedan, 2008-2013 G37 and 2014-2015 Q60. Earlier VQ35DE cars need a different kit.

Do I need a new flywheel?

Not necessarily. Resurface the factory flywheel to a clean, flat face, or install the ACT 600590 Streetlite flywheel that ACT offers for these cars.

Is there a break-in period?

ACT recommends 300 to 500 miles of mild engagement, such as stop-and-go city driving, before racing or spirited driving with an organic street disc.

• How to Diagnose Transmission Slipping
• Shift Flare vs. Slip: How to Tell Them Apart
• Automatic vs. Manual Transmission Repair Cost