Specifications
- Brand
- SPEC
- Part #
- SF503F-9

Spec 11-13 Ford Mustang 5.0L GT/Boss 9-Bolt Cover Stage 3+ Clutch Kit
$677.91
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Fits 2011-2014 Ford Mustang 5.0L GT/Boss. SPEC Stage 3+ Clutch Kit for 9-Bolt Cover.
Key Features
- Fits 2011-2014 Ford Mustang 5.0L GT and Boss models with a 9-bolt cover.
- SPEC Stage 3+ clutch kit designed for increased torque and horsepower handling.
- Features a sprung, multi-plate design for improved engagement and durability.
- High-performance friction material offers a strong and consistent grip.
- Includes clutch disc, pressure plate, and release bearing for a complete assembly.
Product Details
SPEC is known for making well-built drivetrain components, and this Stage 3+ clutch kit is a prime example for your 2011-2014 Ford Mustang GT or Boss with the 5.0L engine and 9-bolt cover. If you're looking to handle more power than the stock clutch can manage, especially if you've made modifications to your engine or plan to, this kit is designed to step up to the challenge. It's built to handle significantly increased torque and horsepower, making it a popular choice for enthusiasts who push their Mustangs hard.
This Stage 3+ kit features a sprung, multi-plate design that offers a good balance between holding power and drivability. The sprung hub helps absorb some of the shock and vibration that can come with a high-performance clutch, making it a bit more comfortable for daily driving than a solid hub setup. The multi-plate configuration increases the surface area for engagement, which is key to its higher torque capacity. SPEC uses a high-performance friction material that provides a strong, consistent grip even under demanding conditions, helping to prevent clutch slip when you're putting down serious power.
When installing this clutch kit, it's important to have the correct tools and follow the manufacturer's recommended procedures. This kit is designed as a direct replacement for your existing clutch assembly, but it's a significant upgrade. Ensure your flywheel is in good condition or consider resurfacing or replacing it at the same time for optimal performance and longevity. This kit includes the clutch disc, pressure plate, and release bearing, all engineered to work together seamlessly.
Specifications
- Brand
- SPEC
- Manufacturer Part #
- SF503F-9
Frequently Asked Questions
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Spec 11-13 Ford Mustang 5.0L GT/Boss 9-Bolt Cover Stage 3+ Clutch Kit




