Detroit Speed

Detroit Speed Adjustable Track Bar Kit

1979-1993 Ford Mustang/1979-1986 Mercury Capri

Part # 042111DS Be the first to write a review
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The Detroit Speed Fox Body Mustang Adjustable Track Bar Kit adds a critical link to keep the rear axle stable during hard cornering. The factory 4-link is completely ineffective at locating the axle side-to-side as the suspension arms travel vertically. The addition of a Detroit Speed Track Bar to the Fox Body Mustang will prevent the axle from wandering unpredictably. The track bar connects to the rear axle to the chassis of the vehicle, which helps keep the axle centered under the chassis during suspension travel. This gives the driver better grip and acceleration off the line and more confidence in the corners. The track bar brackets bolt-on through holes added into the frame rail and U-Bolts to the factory 8.8 rear axle.


  • Bolt-on track bar adds a critical link to keep the rear axle centered and stable during hard cornering - absent from the stock Fox Body Mustang
  • Provides clearance for custom exhaust up to 3" (depending on tire and mini-tub width, fuel tank modification may be required)
  • Improves vehicle's handling by locating the rear roll center 1-1/2" below axle centerline
  • Laser-cut brackets compatible with original frames and axles
Brand Detroit Speed
Emission Code5
Product TypeRear Suspension
California Proposition 65 RequiredYes
Part Number042111DS

This part is legal for sale or use on Emissions Controlled Vehicles, Uncontrolled (Non-Emissions Controlled) Vehicles, and Racing Use Only Vehicles because it does not affect vehicle emissions and is not covered by emissions regulations.


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