Detroit Speed

1964-1966 Mustang Front Speed Kit 1 SA

Single Adjustable CO Shock

Part # 031374-SDS

1964-1966 Mustang Front Speed Kit 1 SA

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The Detroit Speed Front Speed Kit 1 updates the look, handling, and performance of your classic Mustang to modern standards. The Speed Kit 1 lowers the ride height 1.5-3 inches with control arms, coilovers, and shock tower closeouts. Coilovers have been "Detroit Tuned" specifically for the suspension system. This kit pairs perfectly with your Detroit Speed Rear Mini-Tub Kit.


  • Lowers ride height 1.5-3 inches
  • Coilover spring/shock relocated to lower control arm for improved ride control
  • 1-piece style lower control arms include cross-axis bushing and heavy duty, adjustable strut rod pivot
  • Upper control arms feature DSE Caster Tuner slugs for improved alignment adjustability
  • “Detroit Tuned” single adjustable coilover shock allows customer to dial in their preferred shock settings
  • Upper shock mount relocated under fender apron, making for clean engine compartment
  • Shock tower closeouts improve clearance, allowing for wider front wheel/tire packages
  • Compatible with all 64-70 Mustang spindles (not included)
Application1964-66 Mustang
Brand Detroit Speed
Coil Spring Rate350
Emission Code6
Product TypeFront Suspension
Shock TypeSingle Adjustable
Spindle IncludedNo
Sway Bar DiameterNA
Sway Bar IncludedNo
California Proposition 65 RequiredYes
Part Number031374-SDS
Requires use of factory spindle

*Free Shipping & Handling only offered to the contiguous US on orders over $149, excludes clearance parts and oversized packages.

Some parts are not legal for use in California or other states with similar regulations.