QA1 52703 Upper Control Arm Kit, 64-66 Mustang

QA1

SKU
52703
$635.95
Estimated Shipping Date: Jun 12, 2026
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Upgrade your classic Mustang’s front suspension with QA1’s tubular control arm kit (P/N 52703). Designed for 1964-1966 Mustangs, this kit improves geometry, improves ride quality, and adds strength where factory components fall short. Perfect for street performance or restomod builds, purpose-built for use with QA1 coil-over systems delivering sharper handling, better stance, and more stability for modern driving.

BETTER GEOMETRY, STRONGER DESIGN

OEM arms weren’t built for today’s performance expectations. QA1’s tubular design increases caster for improved stability, tightens steering response, and maintains proper alignment through suspension travel.

STRAIGHTFORWARD, BOLT-ON INSTALL

Replaces factory components without cutting or welding and is also compatible with the popular “Shelby Drop”, including a drill template and nut plates. Fully assembled with hardware, they’re ready to bolt in and drive.

FEATURES & BENEFITS

  • Optimized suspension geometry for ’64-‘66 Mustangs
  • Increased caster improves stability and cornering
  • Tubular construction is stronger and lighter than stock
  • Pre-installed ball joints and bushings
  • Designed for use with QA1 Pro Coil systems
  • Sold in pairs
  • Durable powder coat finish

FITMENT NOTES

  • Fits 1964–1966 Ford Mustangs
  • Requires QA1 Pro Coil System, will not work with factory shocks and springs
  • Works with factory and Proforged spindles
  • No welding or cutting required

Specifications

  • Upper or LowerUpper

FREQUENTLY ASKED QUESTIONS (FAQ’s)

What are the benefits of QA1 tubular upper control arms for a 1964–1966 Mustang?

They improve caster, reduce flex, sharpen steering, and provide more stable handling compared to factory arms.

Do QA1 tubular control arms fit stock Mustang spindles?

Yes. These arms are designed to work with factory spindles as well as Proforged spindles.

Do QA1 upper control arms require welding or modifications?

No. The 52703 kit is a bolt-in replacement and comes fully assembled with ball joints, bushings, and installation hardware.

Are QA1 upper control arms compatible with coilovers?

Yes. These arms require a QA1 Pro Coil system and will work with a previously installed QA1 coilover conversion.

What suspension upgrades should I start with on a classic Mustang?

Control arms, sway bars, and coilovers are the most common first steps. Starting with tubular control arms gives immediate improvements in geometry and strength.

How do QA1 control arms improve handling on a 1964–1966 Mustang?

They increase caster, maintain alignment through suspension travel, and make the car feel more planted in corners, especially under hard driving.