Part Number: ZM12-HDSS

Description: ACT 16-18 Mazda MX-5 Miata HD/Performance Heavy Duty Street Sprung Clutch Kit

Part Fitment Requirement: 225mm upgrade. Must use ACT 600870 flywheel (not included in kit) or a modified OE flywheel. 600870 flywheel is compatible with the OE clutch kit as well as an ACT clutch kit. Flywheel sold separately from clutch kits. Pressure plate bolts included (M8-1.25 x 20mm).

Product Weight (lbs.): 17.2

Torque Capacity (ft/lbs.): 312

Torque Capacity Over OE: 46%

Pilot Bushing Included: No

Pressure Plate Type: Heavy Duty

Release Bearing Included: Yes

Clutch Disc Diameter: 224

Disc Material: Organic

Input Spline Quantity: 22

Input Shaft Diameter: 0.9375

Alignment Tool Included: Yes

Grease Included: Yes

Pilot Bearing Included: Yes

Disc Type Sprung Solid: Sprung

Clutch Slave Cylinder Included: No

Clutch Master Cylinder Included: No

Grade Type: Performance

Pressure Plate Bolts Included: Yes

Flywheel Bolts Included: No

Fitment: 16-18 Mazda MX-5 Miata

Details:

ZM12-HDSS kit features ACT's most popular Heavy Duty pressure plate and most popular street disc. ACT Heavy Duty pressure plates use exclusive diaphragm design to increase clamp load, reduce deflection and maximize clutch life. All diaphragms endure a four-stage, heat-treating process for unparalleled performance. ACT pressure plates have precision cover stampings to provide rigidity and consistency. ACT's Performance Street discs feature premium organic materials with high copper content for better heat transfer and steel-backed lining for greater burst strength and durability. These discs have reduced marcel for faster shift action to complement ACT pressure plates, with increased strength and reliability.

Features and Benefits

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