Stifflers Chassis & Suspension LLC, a leader in late model Mustang and F150 chassis and suspension products, designs, tests, & manufactures components for the true enthusiast.

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 …

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 …

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 …

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 …

For 79-04 Mustangs, this kit comes with all you need to install a transmission not currently covered by one of the Stifflers existing crossmembers including G101A and 4L80E transmissions

The Adjustable Crossmember for your 1999 - 2004 Mustang/Cobra has Arrived! The adjustable design of this crossmember works with most any transmission application in your 99-04 …

Stifflers Fit System adds the chassis support you need for your 1994-2004 SN95 Mustang GT, Bullitt, or Cobra! From daily street driving to all out racing, The Stifflers Chassis Stiffening FIT …

Stifflers Transmission Crossmember for T-5, AOD, AODE, 4R70W, 3550, TKO or TKX tranny for your 1982-1993 Foxbody Mustang. Tranny crossmembers bolt-in with no ...

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 …