SPEC SF503H-9 Clutch Kit 5.0L Gt/boss 9-BOLT

( Brand: Spec ), ( Part Type: Clutch ), ( Air Freight Prohibited: False ), ( Manufacturer Part Number: SF503H-9 )

Review SPEC Stage Clutch Kit Ford 5.0l Gt/boss 9-bolt fits MUSTANG BOSS GT 2011–2014

Introducing the SF503H-9 clutch kit, specifically designed for the 2011-2014 Ford Mustang 5.0L GT and Boss models with a 9-inch rear end. This high-performance clutch kit is an essential upgrade for enthusiasts seeking improved power delivery, increased torque capacity, and enhanced driving experience.

The SF503H-9 clutch kit comes with a 10.5-inch pressure plate, 9.5-inch heavy-duty flywheel, and a high-performance clutch disc. The pressure plate boasts a robust design, ensuring optimal clamping force and durability. Its double-riveted construction enhances its strength, while its 11-rib design provides exceptional power handling capabilities.

The heavy-duty flywheel is engineered to minimize rotational mass and provide optimal engine response. Its nodular iron construction ensures superior strength and rigidity, which is crucial for transferring engine power effectively to the transmission.

The high-performance clutch disc, featuring a ceramic material, offers superior heat dissipation and friction coefficients. Its lightweight design reduces rotational mass, leading to quicker rev times and improved acceleration. The disc's double-sided friction material provides even clamping force distribution, ensuring consistent and reliable power transfer to the transmission.

The SF503H-9 clutch kit also includes a new release bearing, pilot bearing, and alignment tool to ensure a smooth and hassle-free installation process. The release bearing is made from high-strength steel, ensuring long-lasting performance and durability.

The SF503H-9 clutch kit is a direct replacement for the OEM clutch system, ensuring easy installation and seamless integration with your 5.0L Ford Mustang GT or Boss vehicle. The clutch kit is engineered to meet or exceed OEM specifications, providing you with peace of mind and enhanced performance.

Upgrade your Ford Mustang 5.0L GT or Boss with the SF503H-9 clutch kit and experience improved power delivery, increased torque capacity, and enhanced driving dynamics. Whether you're driving on the street or the track, this clutch kit is designed to deliver the performance you crave.

The SF503H-9 clutch kit is a popular choice among Ford Mustang 5.0L GT/Boss owners looking to upgrade their clutch system. Here are some pros and cons to help you make an informed decision:

1. High Clamping Force: The SF503H-9 clutch kit provides a higher clamping force than the OEM clutch, which can lead to better power transfer and improved acceleration.

2. Durability: The kit includes a heavy-duty pressure plate, a high-performance flywheel, and a ceramic clutch disc. These components are designed to handle the increased power and torque output of the 5.0L engine.

3. Smoother Shifting: The ceramic clutch disc provides a smoother engagement compared to the OEM clutch, resulting in better shift quality and reduced clutch pedal effort.

4. Reduced Heat: The ceramic clutch disc dissipates heat more efficiently than the OEM clutch, which can help prevent clutch fade and improve performance during prolonged high-performance driving.

5. Customization: The SF503H-9 clutch kit is available in various spring rates, allowing you to tailor the clutch pedal feel to your preference.

1. Cost: The SF503H-9 clutch kit is more expensive than the OEM clutch, which can be a deterrent for some buyers.

2. Installation: Installing the clutch kit requires some mechanical skills and experience. It's recommended to have it installed by a professional to ensure a proper installation and avoid any potential issues.

3. Noise: Some users have reported an increase in clutch noise after installing the SF503H-9 clutch kit. This is normal and can be expected with a high-performance clutch system.

4. Pedal Feel: The increased clamping force and stiffer spring rates can result in a firmer clutch pedal feel, which some drivers may find uncomfortable.

The SF503H-9 clutch kit offers several benefits for Ford Mustang 5.0L GT/Boss owners, including improved power transfer, durability, smoother shifting, and reduced heat. However, it comes with a higher cost, requires professional installation, and can result in increased noise and a firmer clutch pedal feel. Ultimately, the decision to purchase this clutch kit depends on your priorities, budget, and driving style. If you're looking for better performance and durability, the SF503H-9 clutch kit is an excellent choice. However, if you're on a tight budget or prefer a more comfortable clutch pedal feel, you may want to consider other options.

If you decide to purchase the SF503H-9 clutch kit, make sure to have it installed by a professional to ensure proper installation and avoid any potential issues. Additionally, consider purchasing a flywheel bolting kit to ensure a secure installation of the heavy-duty flywheel. Finally, be prepared for an increase in clutch noise and a firmer clutch pedal feel, which are normal with a high-performance clutch system.

part # sf503h9 prices

• $499.45-$522.57

specifications catalyticonvo:

• for models: Gt, Mustang, Boss
• for makes: Ford
• for years: 2011-2014
• brand: Spec
• part type: Clutch
• air freight prohibited: False
• manufacturer part number: SF503H-9

general catalyticonvo:

• Car Truck Parts Accessories > Exhaust Emission Systems > Catalytic Converters
• condition: New

shipping catalyticonvo:

• transit: 5-11 Days
• class: Standard
• type: Fixed
• service: Standard
• cost: $0.00

offer catalyticonvo:

• sold: 0
• started: December 30, 2025
• quantity: 3
• options: Ship-to-home
• availability: In Stock

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• other
• credit card: Visa

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• paid by: Seller
• policy: Returns Accepted
• time: 30 Days

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• # reviews: 26401
• rating: 99.8%