ACT 2015 Nissan 370Z HD/Race Rigid 6 Pad Clutch Kit

ACT NZ2-HDR6 is a dedicated race clutch for the Nissan 370Z, Infiniti G37 and VQ35HR 350Z: the Heavy Duty pressure plate paired with a rigid-hub six-pad ceramic disc. It is for track, drift and drag cars where shift speed and heat capacity matter more than street manners. If your 370Z clutch fades on a road course, slips when you dump it at a drift event, or keeps coming out glazed, and the car rarely sees traffic, this is the kit built for that use.

What the NZ2-HDR6 does in a 370Z

The N024 Heavy Duty plate uses ACT's heat-treated diaphragm to raise clamp load while keeping pedal effort light to moderate. The difference is in the disc. The 6250006 has six ceramic pads on a heat-treated chrome-moly hub with no damper springs. Dropping the springs lowers the disc's mass and inertia, so the gearbox input slows faster and shifts go in quicker. ACT rates the kit at 574 ft-lb at the crank, 100 percent over the factory clutch, with a 250 mm (9.8 in) disc on a 1 in input spline.

ACT is direct about the costs: engagement is aggressive, gear rattle increases, and the rigid design may increase spline wear because nothing absorbs the VQ's firing pulses before they reach the transmission. ACT recommends this kit for race use only. For a car that is also driven on the street, the sprung NZ2-HDG6 gives the same torque rating with a damped hub.

Symptoms that point to a rigid race clutch

• Clutch fades or slips late in a track session as heat builds
• Glazed or heat-cracked disc after drift clutch kicks or drag launches
• Slow, notchy shifts at high rpm from a heavy sprung disc
• Burning smell after back-to-back hot laps
• A spongy or sticking pedal, which on these cars is often the hydraulic release side and should be fixed first

How to confirm before you buy

Bleed the clutch hydraulics and check that the pedal returns fully; a release system that holds the clutch partly open will cook a new disc. Look for oil at the bellhousing from the rear main or input seal. Then do a full-throttle pull in fourth from low rpm and watch whether rpm climbs faster than road speed. Our slipping diagnosis guide explains the road test, and shift flare vs. slip covers how to separate slip from an rpm flare between gears.

Fitment

This listing is titled for the 2015 Nissan 370Z. ACT applies NZ2-HDR6 to the 2009-2020 370Z, 2008-2013 G37 and 2014-2015 Q60 with the VQ37VHR, plus the 2008 G35 sedan and 09/2006-2009 350Z with the VQ35HR. VQ35DE 350Z and G35 cars built before that use ACT's NZ1 kits instead. If the car has a swapped engine, flywheel or transmission, match your old disc spline and pressure plate, or send us year and VIN. More clutch and drivetrain parts are in our rebuild kits section.

Install notes

• Kit contents per ACT: N024 pressure plate, 6250006 rigid disc, PB1012 pilot bushing and AT01 alignment tool. No release bearing is listed, so plan to replace yours separately.
• Resurface or replace the flywheel. ACT lists the 600590 XACT Streetlite with this kit, which further cuts rotating mass for a track car.
• Install the PB1012 pilot bushing, center the disc with the AT01 and torque the cover bolts in stages in a star pattern.
• Bleed the hydraulics with the fluid listed on the reservoir cap and check pedal free play.
• ACT says race discs need only a few hard slips to lap in; keep the clutch from overheating while doing it.

For even more holding power on a boosted car, the NZ2-XTR6 uses the Xtreme plate with a rigid disc.

Can I daily drive NZ2-HDR6?

ACT recommends it for race use only. The rigid hub increases gear rattle and may increase spline wear. For a street-driven car, the sprung NZ2-HDG6 is the better choice.

What is the difference between HDR6 and HDG6?

Both use the N024 Heavy Duty plate and a 6-pad ceramic disc rated at 574 ft-lb. HDR6 has a rigid chrome-moly hub for faster shifts; HDG6 has a spring-center hub that damps vibration.

Does the kit include a release bearing?

No. ACT lists the N024 plate, 6250006 disc, PB1012 pilot bushing and AT01 alignment tool. Buy a release bearing separately if yours is worn.

Will it fit a 2005 350Z?

No. NZ2 kits cover VQ35HR 350Z from 09/2006 and VQ37VHR cars. Earlier VQ35DE 350Z and G35 models use ACT's NZ1 kits.

How heavy is the pedal?

ACT rates it light to moderate. Its Heavy Duty plates typically add 15 to 40 percent pedal effort over stock, depending on the car.

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