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

Item 60012G99
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      Product Information

      Features, Description, Reviews, Q&A, Specs & Installation


      • 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.

      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

      Spec SF64A

      CA Residents: WARNING: Cancer and Reproductive Harm -


      Customer Reviews (15)

      Write a Review

      Ratings Summary

      4.7 out of 5 overall rating from 15 customers

      Installation Time: Full Day

      Installation Cost: $250-$500

      • September 27, 2017

        5 2002 GT - MatthewJ

        Great investment

        I can immediately tell a difference from the stock flywheel to the aluminum. Great throttle response time. Two thumbs up for this product

        Helpful (10)
      • July 19, 2017

        5 2002 GT - BryanM Installation Time: Afternoon

        You can feel the difference

        It is a great mod. Firm and light shifts. Feels very light.

        Helpful (9)
      • March 14, 2017

        5 2002 GT - CalobS Installation Time: Afternoon

        Great product

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

        Helpful (11)
      • January 09, 2013

        5 2003 GT - Supabuck Installation Time: Full Day

        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.

        Helpful (10)
      • November 28, 2012

        4 2002 GT - MattFully4ged Installation Time: Afternoon

        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.

        Helpful (10)
      • July 05, 2012

        4 2001 GT - Duncan Installation Time: Full Day

        Spec Flywheel

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

        Helpful (10)
      • June 20, 2012

        5 2001 GT - CiscoKid15 Installation Time: Shop Install Installation Cost: $250-$500

        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!

        Helpful (10)
      • April 27, 2012

        4 2001 Other - BMC63 Installation Time: Afternoon

        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 !

        Helpful (11)
      • January 27, 2012

        4 2003 GT - Collective82 Installation Time: Full Day

        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.

        Helpful (8)
      • December 09, 2011

        5 2002 GT - imRPandIdoBurnouts Installation Time: Full Day

        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 (9)

      Questions & Answers (3 answers)

      3 Top Rated Questions

      Do I have to buy alignment dowels for the pressure plate or does it come with them

      • This pressure plate does not include the alignment dowels pins.

      Helpful (0)

      How much does this flywheel weigh?

      • The Spec Billet Aluminum Flywheel weighs about 15 lbs.

      Helpful (0)

      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)
      Post Your Question

      Installation & What's in the Box

      Installation Info

      What's in the Box

      • (1) Flywheel

      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

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