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1994 - 2004 MUSTANG CHASSIS STIFFENING

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  • Stifflers

    Spider Brace ('79-'98)

    $234.95

    Don't suffer any longer with limp front frame rails, put the Spider to work for you and GET STIFF! Finally ... a way to stiffen your front frame rails without installing a 12pt-cage or converting to a tube chassis! This...

  • Stifflers

    Strut Tower Brace (03-04 MACH 1)

    $199.95

    Not Getting Any Response, Make it Stiff! Installing a Stifflers strut tower brace adds strength and stiffness to the front end by integrating the strut towers and firewall, greatly reducing flex and alignment changes caused by front suspension loads...

  • Stifflers

    Strut Tower Brace (03-04 Cobra)

    $199.95

    Not Getting Any Response, Make it Stiff! Installing a Stifflers strut tower brace adds strength and stiffness to the front end by integrating the strut towers and firewall, greatly reducing flex and alignment changes caused by front suspension loads...

  • Stifflers

    Strut Tower Brace ('01 Bullitt)

    $199.95

    Not Getting Any Response, Make it Stiff! Installing a Stifflers strut tower brace adds strength and stiffness to the front end by integrating the strut towers and firewall, greatly reducing flex and alignment changes caused by front suspension loads...

  • Stifflers

    Lower Chassis Brace ('96-'04)

    $119.95

    Stifflers' lower chassis brace dramatically increases the strength and stiffness of the front chassis area and factory K-member. This additional stiffness helps to maintain correct front suspension geometry while under load by minimizing...

  • Stifflers

    Spider Brace ('99-'04)

    $234.95

    Don't suffer any longer with limp front frame rails, put the Spider to work for you and GET STIFF! Finally ... a way to stiffen your front frame rails without installing a 12pt-cage or converting to a tube chassis! This...

  • Stifflers

    Web Brace ('79-'04)

    $284.95

    The Web brace ties together our full length subframe connectors andstiffening rails, creating the ultimate in chassis stiffening! As a key component of Stifflers Fully Integrated Technology (FIT)System, it provides a structurally engineered network...

  • Stifflers

    Stiffening Rail ('94-'04)

    $94.95

    More than just a place to put your jack... Installed behind the rocker panel pinch weld lip, these rails multi-task by adding strength and stiffness to your Mustangs chassis as well as providing a safe and solid foundation for your jack...

  • Stifflers

    Subframe Connector ('79-'04)

    $189.95

    Engineered to be the stiffest, lightest and easiest to install weld-on full-length subframe connectors on the market today! Design optimized using CAD/CAE software combined with real-world chassis deflection test data. Full length, manufactured of 1.5 x...

  • Stifflers

    FIT System ('94-'04)

    $569.95

    The FIT System is a modular approach to achieving the ultimate  in chassis stiffness and strength through design. By integrating three key components into a modular system, the Fully Integrated Technology (FIT) System has taken the next...

Stifflers Chassis & Suspension LLC, a leader in late model Mustang and F150 chassis and suspension products, designs, tests, and manufactures components for the true enthusiast. Whether used at the local track or on the street, Stifflers' innovative products are engineered to deliver on their promise of quality, fit, finish, and functionality. Our focus at Stifflers is to develop products that satisfy the needs of the end-user and to design those products to be the most innovative components available on the market today. Stifflers, located just outside of Indianapolis, Indiana, the racing capital of the world, was started in 2010 by founder and head engineer, Brian Figg.

Having spent many years as an engineering technical director in Indy Car and other top open-wheel series, Brian brings his knowledge and experience to the Stifflers product line-up. Racing and engineering are in his blood! The entire team here at Stifflers is made up of automotive enthusiasts that love what we do and what we are creating. It's not work when it's a passion!

Made in the U.S.A., the creation of all Stiffler's products, starting with design and testing, through the manufacturing process, to packaging and shipping, are completed here at our facility to ensure everything meets and exceeds Stiffler's high standards every step of the way. This is our commitment to our customers.

Because of this, we stand behind our products 100%. When you buy a Stifflers product, you are purchasing a highly engineered product that will fit and work right the first time, every time. Trust and quality are what we stand behind and build into every component we make. Contact us today for more information on our custom auto parts for Mustangs and F150s.

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