If you're looking to take your ride to the next level, the Advanced Clutch HD/Race Sprung 4 Pad Kit NM1-HDG4 is definitely worth a look. This isn't just some run-of-the-mill clutch kit; it's packed with features that serious drivers will appreciate. At the heart of it is ACT's Heavy Duty pressure plate, which is pretty much their most popular option for a reason. The unique diaphragm design cranks up the clamp load, cuts down on deflection, and extends the life of your clutch. Trust me, you want that kind of reliability when you're pushing your car to its limits.

One of the standout features is the four-stage heat-treating process that the diaphragms go through. This isn't just a marketing gimmick; it really does enhance performance and durability. Plus, the precision cover stampings give you that extra rigidity and consistency, which is crucial when you’re racing or just driving hard.

Now, let’s talk about the 4-pad spring-centered race disc. This bad boy is designed to dampen torsional vibrations, so you’ll enjoy a quieter ride without sacrificing performance. It’s built tough to handle even the harshest conditions, and while the engagement might feel a bit harsher, you’ll notice that your shifts are quicker and more precise. This kit is particularly well-suited for smaller engines, so if you’ve got a compact setup, you’re in luck.

When it comes to installation, you won’t be left in the dark. You can find the install instructions here.

Features that stand out:

• Light to moderate pedal effort with aggressive engagement—perfect for spirited driving.
• The exclusive diaphragm design helps extend friction life, so you can keep pushing it.
• Engineered for performance, using select ceramic materials that can handle high heat.
• Great for high horsepower street or race applications, no doubt about it.
• Each unit is 100% clamp load tested and dynamically balanced to ensure smooth operation at high RPMs.

Here’s the nitty-gritty on specs:

• Clutch Master Cylinder: Not included
• Grease: Yes, included
• Grade Type: Performance
• Pilot Bushing: Included
• Pressure Plate Type: Heavy Duty
• Release Bearing: Included
• Clutch Disc Diameter: 9.4 in (240 mm)
• Disc Material: Ceramic
• Input Spline Quantity: 24
• Input Shaft Diameter: 1 in
• Alignment Tool: Included
• Disc Type: Sprung Solid
• Pressure Plate Bolts: Not included
• Clutch Slave Cylinder: Not included
• Flywheel Bolts: Not included
• Product Weight: 15.4 lbs
• Torque Capacity: 475 ft/lbs
• Torque Capacity Over OE: 0.9

Fitment:

• Infiniti I30 (1996-1999)
• Nissan Maxima (1981-2003)

This kit is a solid choice for anyone looking to upgrade their clutch system. It’s built for performance and reliability, so you can focus on enjoying the drive.