Mustang A-Arm Lowering Template

A very popular performance suspension modification trick is to lower the upper control arm position to improve tire patch contact with the road.

This modification was performed by Shelby Automotive on their R-Model Racing Shelby's for 1965 and 1966. The same technique was used on the Boss 302 Trans Am Mustangs for 1969 and 1970. The procedure is very simple and effective.

We have supplied the template for your use, please click here to obtain a .pdf file you can down load.

Please click here to view our 1965 to 1973 Mustang Suspension Parts.


Standard Mustang front suspension systems lean the top of the tire out of the fender during corning. This in turn lifts the inside edge of the tire off the pavement, decreasing the tire contact patch. This accounts for your Mustang's increased outside tire wear and poor handling characteristics (under steer). Simply stated under steer is when the car enters a corner and continues to go straight rather than negotiating the turn.

Lowering the position of the upper control arm changes your Mustang's geometry and handling characteristics by increasing the amount of tire that stays in contact with the pavement through the corner. Lowering the suspension system tilts the inside edge of the tire down on to the pavement rather than allowing it to lift. This keeps the tire contact patch flat on the pavement, improves tire wear, and provides greater control at higher cornering speeds

Sacramento Mustang strongly recommends the Global West negative roll suspension kits when considering lowering the front upper control arms. Global West offers a heavy duty replacement upper control arm designed for High Performance use street or strip.


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