ACT HD/Race Sprung 6 Pad Clutch Kit
ACT NS3-HDG6 pairs ACT's Heavy Duty pressure plate with a six-pad sprung ceramic race disc for imported rear-drive Nissan Skylines: the 1989-1992 R32 GTS-T with the RB20DET and the 1993-1998 R33 GTS-25T with the RB25DET, both five-speed. It is the middle step in the NS3 family. The plate keeps a lighter pedal than ACT's Xtreme version, while the ceramic pucks take the heat and torque that make an organic street disc flare once a bigger turbo goes on the RB.
The clutch clamps the disc between the flywheel and pressure plate so the RB's torque reaches the five-speed input shaft. On a stock-boost car the factory clutch is adequate, but raised boost and fuel upgrades lift torque past what that disc was sized for. ACT rates NS3-HDG6 at 525 ft-lb measured at the crank, which it lists as 86 percent over the original clutch. The N013 Heavy Duty plate uses ACT's diaphragm design, heat treated in four stages, to raise clamp load and limit deflection. The 6240306 disc is 240 mm (9.4 in) with a 1 in input spline, and its spring center still damps torsional vibration, which is easier on the gearbox than a rigid hub.
ACT describes the feel as light to moderate pedal effort with aggressive engagement and OE to mild gear rattle, and recommends it for high-horsepower street or race use. A puck disc grabs harder than an organic disc, so expect less slip when pulling away and plan on smooth, deliberate launches in traffic. The kit weighs 19.1 lb.
Do a roll-on in fourth from low rpm and watch whether the tach rises faster than the car accelerates as boost builds. Bleed the clutch hydraulics and confirm full slave travel first, since a soft pedal can leave the clutch partly applied. Check the bellhousing seam for engine oil from the rear main seal; oil on a new ceramic disc means chatter right away. Our slipping diagnosis guide covers reading rpm against speed, and the flare vs slip guide helps tell a clutch problem from a driveline or tuning issue.
ACT lists NS3-HDG6 for the JDM 1989-1992 Nissan Skyline GTS-T (R32) 2.0L RB20DET and the JDM 1993-1998 Skyline GTS-25T (R33) 2.5L RB25DET, rear-wheel drive with the five-speed manual. It does not cover the all-wheel-drive GT-R or the RB26DETT, and imported cars often carry swapped engines, gearboxes or flywheels. Confirm the engine, the five-speed and the flywheel on the car, and send us the chassis code and year if you are unsure. If you want more clamp for a big turbo, the NS3-XTG6 Xtreme 6-pad kit is rated higher; for a daily car, the NS3-HDSS street kit keeps an organic disc.
| Brand | ACT |
| Part number | NS3-HDG6 |
| Fits | ACT HD/Race Sprung 6 Pad Clutch Kit |
| Type | Clutch Kits - Single |
| Condition | New |
| Ships | Same business day (in stock), from the USA |
| Warranty | 1-year |
No. ACT lists it for the rear-drive R32 GTS-T RB20DET and R33 GTS-25T RB25DET with the five-speed. The GT-R with the RB26DETT uses different clutches.
ACT rates it at 525 ft-lb at the crank, 86 percent over the factory clutch. The NS3-XTG6 Xtreme version is rated higher if you need more.
ACT recommends it for high-horsepower street or race use. Pedal effort is light to moderate, but the six-pad ceramic disc engages more aggressively than an organic disc, so takeoffs take more care.
The N013 Heavy Duty pressure plate, the 6240306 six-pad sprung ceramic disc and the AT01 alignment tool. No release bearing or flywheel is listed in the kit.
A factory flywheel in good condition can be resurfaced. If it is cracked, warped or blued, replace it before installing a ceramic disc.
