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Spec Billet Aluminum Flywheel - 6 Bolt (96-98 GT; Late 01-04 GT)

Market Price $415.99 You Save 11% ($46.00)
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  • Item 60012G99
  • MPN# SF64A

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Features & Details

  • SFI Certified.
  • 6 Bolt.
  • Machined to Precise Specs.
  • Billet Aluminum.
  • Fits Mid 01-04 GT.
Race Ready. When you're shopping for a flywheel for your Mustang GT, a SPEC Billet Aluminum flywheel is pounds lighter than your stock flywheel, meaning less rotational mass and less time and effort to get your flywheel moving when you romp on it at the starting line. The result? Your peak horsepower is delivered faster with lightning-fast throttle response and class-winning quick shifts.

Premium Quality. When you're adding a new flywheel to your Mustang GT, you want a premium quality part that will deliver both performance and durability. SPEC Billet Aluminum Flywheels are machined to a .001 tolerance (other brands are only made to .01) and designed and weighted for the perfect balance and surface to complement your new clutch.

Protects Your Investment. When replacing your clutch you have two options: resurfacing your flywheel, or getting a new flywheel. Most times, getting a new flywheel is better than resurfacing, as the flywheel will dictate how well your clutch will perform, as well as how long it will last.

Rebuildable. A cheaper flywheel won't stay that way - SPEC's aluminum flywheels have a replaceable steel friction plate which makes this flywheel rebuildable. And this flywheel surface is also made from a special type of steel specifically designed to help your new clutch "bed in" properly and to promote superior grip - so this might just be the last flywheel you ever have to buy.

SFI Certified. If you're using this flywheel in high performance or racing applications, SFI Certification is critical so you can run your Pony at the track or strip. And it's great for peace of mind even in a daily driver - at higher RPMs, stock cast flywheels have been known to explode.

Application. This Spec Billet Aluminum Flywheel fits the 1996-1998 GT, late 2001-2004 GT and Bullitt Mustangs with a six bolt main crank. This the perfect companion to your new clutch.

Technical Note. This SPEC Billet Aluminum Flywheel is designed for the Mustang GT's with a six bolt main. 2001 Mustangs with production date after 06/01 have a six bolt main.

Please Note. Romeo built engines have 6 bolt cranks and Windsor built engines have 8 bolt cranks. If the 8th character in the VIN is an "X" its a Windsor block, if the 8th character in the VIN is a "W" it is a Romeo block. There is an exception to that rule as the 2001 Bullitt Edition Mustang feature a Romeo built engine. If unsure please check with your Ford dealer to determine if you have a 6 or an 8 bolt main.

Fitment: 1996 1997 1998 2001 2002 2003 2004 Details

What's in the Box
  • (1) Flywheel
Installation Info
Tech Specs
Flywheel Specifications
Year/Model: Mid 01-04 GT Manufacturer: SPEC
Material: Billet Aluminum Bolt Pattern: 6 Bolt
Hardware Included: None SFI Certified: Yes
Will it fit my Mustang?
  • Bullitt - 01
  • GT - 96, 97, 98, 01, 02, 03, 04

Fits Manual GT and Bullitt Mustangs with a 6 bolt main only

Most Helpful Reviews

Great product

Got this flywheel with a new stage 1 clutch...it performs just like it should and I am impressed...fast shipping also

Helpful (1)

great flywheel

very easy to install once the trans is down. easier with two people when torquing down the bolts, but not too difficult with one person will buy again when i get to my next project

Helpful (1)

Overall Rating 4.6 out of 5 stars
Read All 13 Reviews

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1 Questions / 1 Answers

Ask a Question

Will this flywheel work with exedy clutch? Since you guys dont have the exedy flywheel to match my clutch in stock(and havent for quite some time). I want to make sure this SPEC flywheel will work with no problems (chatter, vibrations, ect.). Thanks!


  • No. When upgrading to an aftermarket clutch, you want to use the same brand clutch as your flywheel because they are made with the proper tolerances and specifications for flawless clutch engagement. If you paired the Exedy Clutch with the Spec Flywheel, it could potentially result in premature failure of your clutch as well as rough clutch engagement. Waiting on out of stock parts can be stressful and annoying, but when it comes down to it, it will be worth the wait to match up the correct flywheel with the clutch. It doesn't appear to be much longer for this to come back in; I'd give our Customer Service department a call to get a more specific time frame. Hope this helps!


Helpful (0)

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Customer Reviews (13) Write a Review

Overall Rating 4.6

out of 5 stars

Installation Time:Full Day

Installation Cost:$250-$500

  • Performance Gain 4.5 4.5
  • Fit 4.875 4.9

  • 5/5

    Installation Time: Afternoon

    March 14, 2017

    Great product

    Got this flywheel with a new stage 1 clutch...it performs just like it should and I am impressed...fast shipping also


    Year: 2002 Submodel: GT

    Helpful (1)

  • 5/5

    Installation Time: Full Day

    December 09, 2011

    great flywheel

    very easy to install once the trans is down. easier with two people when torquing down the bolts, but not too difficult with one person will buy again when i get to my next project


    Year: 2002 Submodel: GT Essex, MD

    Helpful (1)

  • 5/5

    October 08, 2010


    Although i did this mod along with the spec 2+ clutch and Long tubes, i can already tell a huge difference, love it!


    Helpful (1)

  • 5/5

    November 08, 2009

    You Need This!!

    '01 GT. I haven't been able to really get on it yet (clutch break-in period), but throttle response feels greatly improved, I can really feel an increase in acceleration both off the line and while cruising. No negative tradeoffs in terms of driveability. Worth every cent, don't be cheap and keep your stock flywheel next time you replace your clutch. Top notch customer service and reasonable delivery time (4 days) from AM.


    Year: 2001 Submodel: GT

    Helpful (6)

  • 5/5

    November 11, 2009

    Best Addition yet

    Ok so ive got this with the spec stage 1 clutch and its amazing. still in break in period so i havent been able to go through the revs with it in gear, but in neutral, to see it rev so easily its so sweet. and revs dont fall flat instantly like some say, so driveability isnt negatively impacted one bit. recommend to ANYONE!!

    Dick Breakey

    Helpful (5)

  • 5/5

    March 27, 2011

    Good Flywheel

    Installation was easy but you have to hammer in the pressure plate pins. Be careful doing that so you don't scratch the face or damage the aluminum. Performance increase is noticeable and with a more firm responsiveness from the engine. No worrys about using in a daily driver. It takes a bit more finesse to work the clutch from a stop but its easily learned.


    Year: 2003 Submodel: GT

    Helpful (3)

  • 5/5

    Installation Time: Full Day

    January 09, 2013

    Good replacement flywheel with performance gain.

    This product fit perfectly. You have to be careful not to damage the plate when inserting the pins. I used a rubber hammer and stacks of cardboard to support the flywheel when inserting the pins. I notice that the car revs faster and it takes less time to drop rpms in-between shifts. If you have BBK long tube headers, take a day off to replace the clutch as the passenger side header will block the transmission from being removed.


    Year: 2003 Submodel: GT Suwanee, GA, USA

    Helpful (1)

  • 4/5

    Installation Time: Afternoon

    November 28, 2012

    Spec Aluminum Flywheel

    Great prduct. Very reputable brand. When I first picked the package up out front of my door I had thought I got something cheep because of how much lighter it is. After taking it out of the package and feeling the performance, it's nothing to complain about. Less Rotational inertia for your engine, giving your engine less of a struggle to turn the internal components. Resulting in more RWHP! Great looks too.


    Year: 2002 Submodel: GT Joliet, IL, USA

    Helpful (1)

  • 4/5

    Installation Time: Full Day

    July 05, 2012

    Spec Flywheel

    Went in easy. The lighter flywheel really helps the car out. Great replacement from the factory one.


    Year: 2001 Submodel: GT Malvern P.A

    Helpful (1)

  • 5/5

    Installation Time: Shop Install

    Installation Cost: $250-$500

    June 20, 2012

    Super Flywheel

    I had this installed with a new clutch and it feels great already. Can't wait to do a little racing, but it feels great right now!


    Year: 2001 Submodel: GT Parma, OH, USA

    Helpful (1)

  • 4/5

    Installation Time: Afternoon

    April 27, 2012

    SPEC products are all that and then some

    Very pleased with my purchase of the SPEC aluminum Flywheel.. Great Product... Form, Fit, and Function all as described and then some.. No surprises when it came to the install, instructions were great. I have been very happy with the results.. Definitely a noticeable change in the way the motor spins up into the power band with the lightweight flywheel upgrade.. Very happy I made the purchase, hitting the track this weekend and hoping to set a new personal record... SPEC Products For The Win !


    Year: 2001 Submodel: Other New Hampshire, USA

    Helpful (1)

  • 4/5

    Installation Time: Full Day

    January 27, 2012

    Great weight reducer

    Bought this with my stage 2 clutch and even though I have no real expierence in putting this in a friend of mines done this so we dropped the tranny and put both on at once an they worked like a dream. Now I put more ponies to the ground and I rev faster. Only down side I saw was I sin my tires easier but that makes for a great show when racing in my opinion. I forget how much weight it cut but it was around 10 pounds off my drivetrain and you could feel it moving so much better and faster.


    Year: 2003 Submodel: GT Lawrence Kansas

    Helpful (0)

  • 4/5

    August 21, 2009

    SPEC Billet Aluminum Flywheel - 6 Bolt (96-98 and Mid 01-04 GT)

    easy install and easy to use.

    Dale B

    Helpful (2)

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