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Spec Clutch SF665 Stage 5 Racing Clutch Kit - Sintered Iron Full-Metallic Disc

(2005-2007 Ford Mustang)

Manufacturer

Picture for manufacturer Spec Clutch

Part Number

SF665
7 reviews
Sale Price

$624.50

Estimated ship date Friday, November 27

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Live-in-stock inventory

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Fitment guaranteed

Fitment guaranteed

Product Details

The Spec Clutch SF665 Stage 5 Clutch Kit is SPEC's highest-output single-disc clutch solution, engineered for extremely modified drag race and pulling applications. Built around a full-metallic sintered iron friction disc, the Stage 5 delivers the highest possible friction coefficient in SPEC's single-disc lineup, providing maximum holding power for high-torque, high-horsepower builds.

Key Features:

  • Full-metallic sintered iron friction disc — maximum friction coefficient for race-level torque capacity
  • High-clamp pressure plate — aggressive clamping load for positive lockup under extreme power; adjustability available on select applications
  • Solid 12-rivet unsprung hub assembly — rigid iron disc construction, heat-treated for strength and durability
  • Bearing and alignment tool kit included — everything needed for installation
  • Ideal for drag racing and tractor/truck pulling — also suited for progressive torque-induced (slipper) engagement applications

Important Notice: The Stage 5 is a race-only clutch and is not recommended for street use due to harsh, aggressive engagement characteristics. For best results, this kit should be ordered as a custom configuration — contact a SPEC technical representative with full details about your vehicle and intended use before ordering. A SPEC flywheel is recommended for use with this clutch.

Products specifications

Fits

2005-2007 Ford Mustang

Torque Capacity

791 ft/lbs

So far so good

Very competitive prices and fast FREE shipping! Will do business with Autoplicity again!

Prices were very fair, had to check back a few times to the listing to determine if item was sold in pairs and/or individually. Overall however the product looks good.

I bought gauges from here and it was the best price around. They shipped it quickly and it should be here soon. Ill buy from here again.

BEST PRICE AROUND, HANDS DOWN. Shipping was fast and communication was impeccable. THANKS FOR THE PROFESSIONALISM.

Very good website. Easy to use. found the parts i needed and the order process was very easy since i could just login using my amazon account. Very convenient. Received my parts in a week.

I ordered this product and Wednesday in the morning and it was on my door step Thursday morning with regular shipping. The ordering process was super easy and the price was $35 cheaper than any other online retailer. The Rack is awesome, easy to assemble took me about 20 minutes by myself, put on my jeep hooked up the bikes and off I went, fantastic design, I highly recommend the Rola NV2 bike rack and highly recommend Autoplicity

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