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Spec Clutch SF503F-2 Stage 3 Plus Carbon Semi-Metallic Clutch Kit

(2011-2014 Ford Mustang)

Manufacturer

Picture for manufacturer Spec Clutch

Part Number

SF503F-2
14 reviews
Sale Price

$597.67

Estimated ship date Wednesday, November 25

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Product Details

The SPEC SF503F-2 Stage 3+ Clutch Kit is SPEC's flagship performance clutch stage, engineered for high-powered street and race applications that demand serious torque capacity without sacrificing everyday drivability. Rated up to 875 ft-lbs of torque at the flywheel, this kit bridges the gap between an aggressive race clutch and a street-friendly unit — delivering confident engagement whether you're heading to the track or cruising home from it.

At the heart of the Stage 3+ is a full-face carbon semi-metallic friction disc, which provides an exceptional balance of bite, friction coefficient, and longevity. Unlike puck-style race clutches, the full-face design eliminates the harsh on/off engagement feel, making it far more manageable in daily driving and stop-and-go traffic. The disc hub is double-sprung with spring cover reliefs for added rotational flexibility and vibration damping, while heat-treated internal components ensure long-term strength and durability under repeated high-load cycling.

Key Features:

  • Carbon semi-metallic full-face friction disc — superior bite, friction coefficient, and service life
  • High-clamp pressure plate — maximizes clamping force for high-torque applications
  • Double-sprung hub with spring cover reliefs — reduces drivetrain shock and improves engagement smoothness
  • Heat-treated hub components — enhanced strength and durability under sustained high-load use
  • Includes bearing and installation tool kit — everything needed for a complete clutch replacement

Ideal Driving Applications:

  • Street performance and high-powered daily drivers
  • Drag racing and strip use
  • Autocross and road racing
  • Pulling and rally events
  • Drift applications

The SPEC Stage 3+ is the smart choice for forced induction or heavily built engines that need a clutch capable of handling serious power while still delivering the pedal feel and engagement manners required for street use. Kit includes the high-clamp pressure plate, full-face carbon semi-metallic disc, release bearing, and alignment tool.

Products specifications

Fits

2011-2014 Ford Mustang

Torque Capacity

875 ft/lbs

Best Price! and quick shipping A++

Great price and shipping was far better than other sites.

Easy to order and quick shipping. Was the best price.

Great Service!

So far, they did good getting my package to me...downfall it was opened from whoever was subcontracted to send it to me. however they promptly have provided me with a return slip and we will see where it goes from there. they were quick to help fix their problem as long as i had pictures of what was wrong. still cheaper than anywhere else.

easy navigating

quick, cheap, and easy

Very quick ordering with Amazon

Great price

Found what I needed for a good price. They Forgot to send my shipping info but my order still arrived on time so it was no big deal.

Easy ordering and good prices

Great price and fast shipping!!!!

Great price, fast shipping and the items was correct. A perfect transaction. Thank you!

I was trying to locate a hi volocity radiator fan and for it at Autoplicity at a very good price. The item was shipped fairly quickly concidering it most likely had to come from the manufacturer. Thanks for your help.

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