# ACT FM4-HDG6 HD/Race Sprung 6 Pad for 1986–1995 Ford Mustang

ACT Heavy-Duty Clutch Kits are high quality products guaranteeing superior functionality and efficiency. These products provide a clamp load increase up to 50 percent, increasing torque capacity.

Important Note:

6-paddle spring center disc. Aggressive clutch engagement.

**Key Features:**

-   10.5"
-   Aftermarket 26 spline
-   Spline Size (Inches): 1-1/8
-   Disc Type: Race Disc
-   Spline Count: 26
-   Product Weight (lbs.): 22.1
-   Torque Capacity (ft./lbs.): 620
-   Light to moderate pedal effort, aggressive engagement, OE to mild gear rattle
-   Moderate friction life, extended by ACT's exclusive diaphragm design
-   Carefully engineered, precisely assembled, accurately balanced, uses select ceramic friction materials for high heat tolerance and maximum performance
-   Recommended for high horsepower street or race use
-   100% clamp load tested and dynamically computer balanced for smooth high RPM reliability

FM4-HDG6 features ACT's most popular Heavy Duty pressure plate. 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 6-pad, spring-centered race disc features a spring-center to properly damp torsional vibrations and resist failure under harsh conditions. ACT spring retainers utilize wraparound spring windows and thicker retainer stampings to provide spring support, reduce stress concentrations, and increase strength and reliability. With the 6-pad, spring-centered race disc, engagement is harsher, but shifting is faster. The 6-pad, spring-centered disc is recommended for larger clutch sizes to absorb more heat.  
Since 1994, Advanced Clutch Technology has specialized in performance clutches and flywheels. All products are made from the highest quality materials and then necessarily tested to ensure they perform to the customers' expectations.

### Vehicle Fitment Table

Year

Make

Model

Position

Fitment Precision

Note

1986

Ford

Mustang

Trim: GT, LX; Engine: 5.0L

1987

Ford

Mustang

Trim: GT, LX; Engine: 5.0L

1988

Ford

Mustang

Trim: GT, LX; Engine: 5.0L

1989

Ford

Mustang

Trim: GT, LX; Engine: 5.0L

1990

Ford

Mustang

Trim: GT, LX; Engine: 5.0L

1991

Ford

Mustang

Trim: GT, LX; Engine: 5.0L

1992

Ford

Mustang

Trim: GT, LX; Engine: 5.0L

1993

Ford

Mustang

Trim: GT, LX, SVT COBRA, SVT COBRA R; Engine: 5.0L

1994

Ford

Mustang

Trim: GT, SVT COBRA; Engine: 5.0L

1995

Ford

Mustang

Trim: GT, GTS, SVT COBRA; Engine: 5.0L

### FAQ

**Will this fit my vehicle?**  
Please verify your year, make, model, position, and any fitment notes using the compatibility table above before purchase.

**What part number is this?**  
The listed part number is FM4-HDG6.

**Is this product designed for direct replacement?**  
Yes. This product is intended to match the compatible vehicle applications listed in the fitment table.

**Should I confirm fitment before ordering?**  
Yes. Always compare your original part, position, and vehicle details with the fitment table before ordering.

### Common Searches

-   HD/Race Sprung 6 Pad for Ford Mustang
-   FM4-HDG6 fitment
-   ACT HD/Race Sprung 6 Pad
-   1986–1995 Ford Mustang HD/Race Sprung 6 Pad
-   ACT FM4-HDG6 replacement

## Details

- **Price:** 1253.64 CAD
- **Vendor:** ACT
- **Type:** HD/Race Sprung 6 Pad
- **Tags:** 1986–1995 Ford Mustang, ACT, Clutch, Clutch Disc, Flywheel, FM4-HDG6, HD/Race Sprung 6 Pad, Performance Clutch, Pressure Plate

## Variants

| Variant | Price | Available |
|---------|-------|-----------|
| Default Title | 1253.64 CAD | In stock |

## Images

- ACT FM4-HDG6 HD/Race Sprung 6 Pad for 1986–1995 Ford Mustang

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> Source: [Standard Auto Part](https://www.standardautopart.com/products/act-fm4-hdg6-hd-race-sprung-6-pad)
> Updated: 2026-10-16