So, you're looking at the Advanced Clutch HD/Race Rigid 4 Pad Kit ZM4-HDR4, huh? Let me tell you, this isn?t just any clutch kit?it's built for those who really want to feel the power under their feet. The first thing you?ll notice is ACT's Heavy Duty pressure plate, which is pretty much their bread and butter. They've got this exclusive diaphragm design that cranks up the clamp load while keeping deflection at bay. What does that mean for you? Longer clutch life and better performance, plain and simple.

Now, these pressure plates go through a serious four-stage heat-treating process, which is like giving them a performance upgrade right out of the box. You can count on the precision cover stampings to give you that extra rigidity and consistency you want when you?re really pushing your car. And let?s talk about the 4-pad rigid race discs?made with high-quality ceramic friction materials, they?re tough as nails. The chrome-moly hub is heat-treated too, so you know it?s built to last. Plus, the lightweight design means you can shift quicker, which is a game-changer on the track.

Sure, the engagement is a bit harsher, but if you?re after faster shifts, this setup is perfect. It?s particularly suited for smaller engines with those smaller disc sizes, so if you?ve got a Mazda Miata from 2006 to 2015, you?re in luck.

Install Instructions:

• For Instructions CLICK HERE

Features:

• Light to moderate pedal effort with aggressive engagement and a bit of gear rattle?just what you want for that race feel.
• Moderate friction life, but thanks to ACT's diaphragm design, you?ll get more mileage out of it. Just keep in mind that this rigid design might wear your spline a bit quicker.
• Everything?s carefully engineered and balanced, using select ceramic materials for high heat tolerance and max performance.
• This kit is really meant for race use only, so if you?re serious about your driving, this is for you.
• Each kit is 100% clamp load tested and dynamically balanced, so you can trust it at high RPMs.

Specifications:

• Clutch Master Cylinder Included: No
• Grease Included: Yes
• Grade Type: Performance
• Pilot Bushing Included: No
• Pressure Plate Type: Heavy Duty
• Release Bearing Included: Yes
• Clutch Disc Diameter: 8.8 in (224 mm)
• Disc Material: Ceramic
• Input Spline Quantity: 23
• Input Shaft Diameter: 1 in
• Alignment Tool Included: Yes
• Disc Type: Solid
• Pressure Plate Bolts Included: Yes
• Clutch Slave Cylinder Included: No
• Flywheel Bolts Included: No
• Pilot Bearing Included: Yes
• Product Weight: 12 lbs
• Torque Capacity: 359 ft/lbs
• Torque Capacity Over OE: 0.71

Notes:

• Designed for 6-speed applications only. Pressure plate bolts are included (M8-1.25 x 20mm).

If you?re ready to take your Miata to the next level, this clutch kit is a solid choice. It?s built for performance, and once you feel that engagement, you?ll know you made the right call.