ACT 4200105 4-Pad Sprung Race Clutch Disc for 1990–1993 Mazda Miata

4200105 is a 4-pad spring-centered race disc made with high quality, ceramic friction materials. The engagement is harsher, but shifting is faster. The heavy duty torsional dampening springs are stronger, in most cases, than standard springs and are provided in the best sizes and spring rates to suit the application. The race disc features a heat-treated spring steel drive plate and is well-suited for the smaller disc sizes in smaller engines. 4 Pad Sprung Race Disc Aggressive engagement, quick shifts, OE to mild gear rattle; Premium ceramic friction materials provide moderate wear rates and high heat tolerance; Utilizes wraparound spring windows, thicker retainer stampings and a heat-treated, spring steel drive plate to provide support, reduce stress concentrations and increase strength and reliability; Recommended for race use only; High burst strength and holds 28% more torque than typical organic materials

• "Excellence in Performance", backed by the best one-year warranty in the industry!

The ACT 4200105 4-Pad Sprung Race Disc is engineered for race applications that demand aggressive clutch engagement, fast shifting, and high heat resistance. Its premium ceramic friction material provides strong holding power, moderate wear rates, and the ability to handle substantially more torque than typical organic clutch materials. The 4-pad design is well suited to smaller clutch disc sizes and smaller-displacement engines, including the 1990–1993 Mazda Miata applications listed below.

This ACT race disc uses heavy-duty torsional dampening springs selected in suitable sizes and spring rates for demanding performance applications. Wraparound spring windows, thicker retainer stampings, and a heat-treated spring steel drive plate help reduce stress concentrations while improving strength, reliability, and burst resistance. Engagement is intentionally harsher than an organic street disc, with quick shifts and OE to mild gear rattle possible. The ACT 4200105 is recommended for race use only and is backed by ACT's one-year warranty.

Key Product Specifications and Technical Data

• Brand: ACT
• Part Number: 4200105
• Product Type: Sprung race clutch disc
• Disc Design: 4-pad ceramic friction disc
• Friction Material: Premium ceramic
• Drive Plate: Heat-treated spring steel
• Dampening: Heavy-duty torsional springs
• Recommended Use: Race applications only

What's Included

• One ACT 4200105 4-pad sprung race clutch disc

Fitment: Fits 1990 Mazda Miata; 1991 Mazda Miata; 1992 Mazda Miata; and 1993 Mazda Miata. Verify the vehicle's clutch configuration and application requirements before ordering.

Notice: This product is designed for competition use. Aggressive engagement and possible gear rattle may make it unsuitable for normal street driving. Product contains a California Proposition 65 warning.

Features:

• Aggressive engagement: Delivers rapid clutch response and faster shifting for competition driving.
• Premium ceramic friction material: Provides high heat tolerance, moderate wear rates, and approximately 28% greater torque capacity than typical organic materials.
• Heavy-duty torsional dampening springs: Uses stronger springs selected to support demanding race applications and help control driveline shock.
• Reinforced race construction: Wraparound spring windows, thicker retainer stampings, and a heat-treated spring steel drive plate improve strength, burst resistance, and reliability.

Fitments:
1990 Mazda Miata Base
1991 Mazda Miata Base
1991 Mazda Miata SE
1992 Mazda Miata Base
1993 Mazda Miata Base
1993 Mazda Miata LE

Air Freight Prohibited: false
Not Carb Approved: false
Ltl Freight Required: false
Prop 65: Y
Part Type: automotive
Epa: N/A
Carb Acknowledgement Required: false
Regular Stock: t
Units Per Sku: 1