QA1 52721 Street-Performance Lower Control Arm Kit 1971-76 GM B-Body

Vehicle Fitment

• 1971-1976 GM B-Body (Caprice / Impala / LeSabre) - front lower control arm replacement kit

Features

• Tubular HSLA steel construction to reduce unsprung weight and increase rigidity
• Integrated low-friction ball joints and polyurethane bushings for improved response and durability
• Pre-assembled arms for bolt-in installation using factory mounting points
• Optimized geometry with increased caster for enhanced straight-line stability and handling precision
• Powder-coat finish for corrosion resistance and clean under-hood appearance
• Designed for street performance builds yet strong enough for occasional track use
• Sold as a pair including both left and right arms for full axle coverage
• Made in the USA with quality control and backing warranty support

Specifications

• Part Number: 52721
• Application: Lower front control arm kit for 1971-1976 GM B-Body
• Construction: Tubular HSLA steel tubing
• Bushing/Ball Joint: Polyurethane bushings + integrated ball joints
• Finish: Black powder-coat
• Included: Both left & right lower control arms

Included Components

• 1x Left lower control arm
• 1x Right lower control arm
• Hardware kit (bushings, bolts, mounting plates) included

Product Description

The QA1 52721 Street-Performance Lower Control Arm Kit is a precision upgrade for classic GM B-Body vehicles from 1971 to 1976. Replacing the factory lower control arms with these high-quality tubular units strengthens the front suspension, reduces unsprung mass, and sharpens handling response especially when paired with other performance suspension components.

With integrated ball joints and low-friction polyurethane bushings, the 52721 kit brings enhanced durability and smoother operation compared to stock arms. The improved geometry adds caster and helps the vehicle track straighter while maintaining stability under load. Installation is simplified with pre-assembled arms using factory mounting points, making this a practical upgrade for both street and performance builds.

Because this kit is designed for a specific vehicle range (1971-76 GM B-Body), verify the front-end configuration - including sub-frame, lower arm mounts and suspension type - before purchasing. After installation, alignment is strongly recommended to achieve optimal handling results. Whether you're restoring, modifying, or building a high-performance street machine, the QA1 52721 kit offers a significant upgrade in front-end control and ride precision.