ACT FM6-HDSS Heavy Duty Performance Street Sprung Clutch Kit for 2011–2017 Ford Mustang

FM6-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. HD/Perf Street Sprung Light to moderate pedal effort, smooth positive engagement, OE to mild gear rattle; Longer friction life, extended by ACT's exclusive diaphragm design; Carefully engineered, precisely assembled, accurately balanced, with premium organic friction materials for heat tolerance and reduced fade; Recommended for street and race use; 100% clamp load tested and dynamically computer balanced for smooth high RPM reliability

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

The ACT FM6-HDSS Heavy Duty Performance Street Sprung Clutch Kit is engineered for drivers who need dependable clutch performance for daily street use, spirited driving, and moderate racing applications. This kit combines ACT’s Heavy Duty pressure plate with a Performance Street sprung disc to deliver increased clamp load, smooth engagement, and reliable power transfer while maintaining manageable pedal effort.

The Heavy Duty pressure plate uses ACT’s exclusive diaphragm design to reduce deflection, improve clamping consistency, and help extend friction life. Each diaphragm undergoes a four-stage heat-treating process for enhanced durability, while precision cover stampings provide the rigidity and consistency needed for dependable operation. The pressure plate is carefully engineered, accurately assembled, and dynamically balanced for smooth performance at high engine speeds.

The Performance Street disc uses premium organic friction material with high copper content to improve heat transfer and help reduce fade during demanding use. Steel-backed linings increase burst strength and durability, while reduced marcel provides quicker shift action. The sprung hub design helps deliver smooth, positive engagement with OE to mild gear rattle characteristics. ACT recommends this clutch kit for street and race use, and every kit is clamp-load tested and computer balanced. The ACT FM6-HDSS is backed by ACT’s one-year warranty. Fitment includes 2011–2017 Ford Mustang applications as listed below.

Key Product Specifications and Technical Data

• Brand: ACT
• Part Number: FM6-HDSS
• Kit Type: Heavy Duty pressure plate with Performance Street sprung disc
• Application: Automotive clutch replacement and performance upgrade
• Friction Material: Premium organic material with high copper content
• Disc Design: Sprung hub with reduced marcel for faster shift action
• Use: Street driving, spirited driving, and race applications
• Warranty: ACT one-year limited warranty

What's Included

• Heavy Duty pressure plate
• Performance Street sprung clutch disc

Features:

• Heavy Duty Diaphragm Design: Increases clamp load, reduces deflection, and helps maximize clutch service life.
• Heat-Treated Pressure Plate: Four-stage heat treatment improves diaphragm durability and performance consistency.
• Premium Organic Friction Material: High copper content promotes heat transfer and helps reduce friction fade.
• Street and Race Performance: Delivers light to moderate pedal effort, smooth positive engagement, and reliable high-RPM operation.

Fitments:
2011 Ford Mustang Base
2012 Ford Mustang Base
2013 Ford Mustang Base
2014 Ford Mustang Base
2015 Ford Mustang V6
2016 Ford Mustang V6
2017 Ford Mustang V6

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