Why Upgrade to ACT MZ012?

Common issues with stock pressure plates:

• Weak clamp load under performance driving
• Clutch slip at higher RPM
• Heat fade during aggressive use
• Inconsistent engagement

ACT Fixes That:

• Increased clamp load for higher torque capacity
• Improved pressure distribution across clutch disc
• Better heat resistance under aggressive driving
• More consistent engagement feel

Translation: it actually holds power now.

ACT’s performance pressure plates offer many advantages over stock pressure plates. The original single diaphragm design maintains the correct pressure plate geometry, which gives a smooth and precise feel that may be positive and firm, extends grab life, and increases clamp load.

Vehicle Fitment (Mazda Platform)

Designed for select Mazda manual transmission applications:

Mazda MX-5 Miata:

• 1990–2005 (NA / NB – 1.6L / 1.8L)

Mazda RX-8:

• 2004–2011 (1.3L Rotary)

Engine Compatibility:

• 1.6L B6ZE / 1.8L BP (Miata)
• 13B-MSP RENESIS (RX-8)

Transmission:

• Manual transmission only

Ideal For:

• Performance builds
• Autocross / track use
• Street + spirited driving
• Upgraded clutch setups

If your clutch slips when you push it—this fixes it.

This Heavy Duty model increases clamp load 20-50%, with a stock to moderate pedal feel that makes it a good selection for both street and race use. The all new (not “re-manufactured”) components are exact engineered for each and every application and manufactured from quality materials the use of dedicated tooling.

What’s Included

• ACT MZ012 heavy-duty pressure plate

(Simple—but critical upgrade.)

Key Features

• Heavy-duty diaphragm design
• Increased clamp load vs OEM
• Improved torque holding capability
• Precision-balanced construction
• Compatible with performance clutch discs

An exclusive four stage heat treating process is performed on all diaphragms, and the induction hardened bearing contact area promotes extremely long wear life.

Performance Benefits

• Eliminates clutch slip under load
• Improves engagement consistency
• Handles increased power and torque
• Enhances driving confidence

No slipping. No fade. Just grip.

⚠️ What to Expect

• Firmer clutch pedal feel
• Slightly more aggressive engagement
• Works best with:
  • Performance clutch discs
  • Upgraded flywheel setups

Translation: stronger—but still streetable.

Drive straps and rivets securely locate the contact face to the duvet for quiet, trouble free operation and not using a loose pieces to wear or rattle.

Provides 20-50% clamp load increase and a stock to moderate pedal feel; good choice for a street or race disc

Installation Notes

• Pair with:
  • ACT performance disc (recommended)
• Inspect:
  • Flywheel condition
  • Clutch hydraulics
• Follow proper break-in procedure
• Ideal install during:
  • Clutch upgrade
  • Performance builds

Why ACT MZ012 pressure plate?

Because ACT:

• Specializes in performance clutch systems
• Is trusted across track and street builds
• Delivers real torque-holding capability

Final Verdict

The ACT MZ012 Heavy Duty Pressure Plate is a must-have upgrade for Mazda performance builds—stronger, more reliable, and built to handle real driving.

Finally gives your clutch the backbone it was missing.