The Chassisworks FAB9™ direct-fit, leaf-spring housing offers exceptional performance and reliability with ease of installation. Spring pads accept 2-1/2” wide, OEM or aftermarket leaf springs, positioned 43” apart (on center). This enables a simple, olton replacement or 9” conversion for many 1960s and 1970s Ford/Mercury vehicles, including: Cougars, Falcons, Fairlanes and Mustangs. The FAB9™ housing’s superior strength comes from fabricated center-section panels, internal tube gussets, and consistent robotic-spray-arc-welded seams. A folded back brace is also available to further strengthen the entire assembly. Mounting tabs can added to the assembly for customers choosing to equip their vehicle with our tubular torque arm. Standard housings are built from mild steel, with 4130 chromemoly construction offered as an upgrade. The 4130 upgrade is strongly recommended for vehicles exceeding 600 hp. Stock Mustang, wheel-to-wheel1, housing widths of 60-3/4” (‘71-73), 59-1/4” (‘67- 70”) and 57-1/4” (‘64-66) are available for use with stock-offset wheels. Narrowed housing widths are also offered in 1/4” increments to a minimum of 55-1/4”. Complete correct-length axle packages and third members are also available. Ask our sales representatives for details.

  • 1967-1970 Mustang
  • 1967-1970 Cougar
SKU 84M20-111
Brand Total Control Products

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