QA1 7720-203 Bolt-In Coil Spring Adapter for QA1 Lower Control Arms

The QA1 7720-203 Bolt-In Spring Adapter is a precision-engineered adapter plate designed to allow QA1 tubular lower control arms to be used with your factory coil springs — no cutting, welding, or permanent modifications required. This is an ideal solution for builders who want the handling benefits of QA1's performance control arms while retaining their stock spring and shock assemblies.

Key Features:

• Bolt-in design installs without permanent modifications
• Allows QA1 tubular control arms to accept stock OEM coil springs
• Includes button head bolts and 5/16" lock nuts for secure installation
• Spring adapter mounts with shock mounting holes biased toward the ball joint
• Compatible with QA1 part numbers 52364, 52365, 52464, and 52465
• Quality construction with a durable finish

Installation Notes:

• Set the spring adapter in place and install button head bolts facing down
• Install included 5/16" lock nuts on the bottom side of the control arm
• Install the coil spring isolator on the adapter plate, aligning the isolator with the pigtail on the spring
• Shock mounting bolt holes on QA1 control arms are threaded 3/8"-24

The QA1 7720-203 spring adapter is sold as a set and is the perfect complement to QA1's tubular front control arm systems, letting you upgrade your front suspension geometry and reduce unsprung weight without committing to a full coilover conversion.