-9%
Click to zoom in
Build a properly matched suspension or steering setup with this QA1 control arms. Manufacturer part number 52721 is offered in the listed 71-76 GM B-Body Control Arm Kit Lower Street Perform configuration, so vehicle application, mounting position, dimensions, spring rate, adjustment range, and all notes must be confirmed before ordering.
Key Features
- Strength to Weight Design: Tubular steel construction reduces unsprung weight while maintaining durability under street loads.
- Bolt-In Installation: Direct fit replacement arms install without fabrication using factory mounting points.
- High strength tubular steel with reinforced ends for weight savings and impact resistance.
- Grease fittings provided for bushing maintenance.
- Reuse or replace factory hardware torque to spec.
- Compatible with stock or QA1 coilover springs and ball joints.
Fitment
| Years | Make | Model | Submodel or Application |
|---|---|---|---|
| 1971-1972 | Chevrolet | Caprice | All listed configurations unless otherwise noted |
| 1973-1976 | Chevrolet | Caprice | Classic |
| 1976 | Chevrolet | Caprice | Classic Estate |
| 1976 | Chevrolet | Caprice | Classic Landau |
| 1975-1976 | Chevrolet | Caprice | Classic Sport |
| 1973-1974 | Chevrolet | Caprice | Estate |
| 1971-1976 | Chevrolet | Impala | All listed configurations unless otherwise noted |
| 1975-1976 | Chevrolet | Impala | Custom |
| 1976 | Chevrolet | Impala | Custom Landau |
| 1976 | Chevrolet | Impala | S |
| 1975-1976 | Chevrolet | Impala | Sport |
Confirm chassis configuration, suspension position, drivetrain clearance, brake package, wheel and tire clearance, and every current QA1 application note.
Specifications
| Brand | QA1 |
|---|---|
| Manufacturer Part Number | 52721 |
| Product Type | Control Arms |
| Listed Configuration | 71-76 GM B-Body Control Arm Kit Lower Street Perform |
| Compatibility Basis | Vehicle Specific |
| Condition | New |
What's Included
One new QA1 control arms identified by manufacturer part number 52721, with only the components and hardware supplied by QA1 for that exact part number.
About QA1
QA1 develops suspension, steering, driveline, rod-end, bearing, spring, and chassis components for street, performance, racing, restoration, and custom vehicle applications.
Related QA1 Products
- Shop all QA1 products
- QA1 65-70 GM B-Body Street Performance Lower Control Arm Kit - Front
- QA1 70-81 GM F-Body/73-77 A-Body/75-79 X-Body/78-96 B-Body Street Perf Lower Control Arm Kit - Front
- QA1 64-72 GM A/G-Body Street Performance Lower Control Arm Kit - Front
Frequently Asked Questions
Will QA1 52721 fit my 1971-1972 Chevrolet Caprice?
Match the complete fitment row, then verify mounting position, suspension configuration, drivetrain clearance, brake package, wheel and tire clearance, and every current QA1 note.
What measurements matter when ordering QA1 52721?
Verify the dimensions and interfaces named in this listing, including thread size and direction, extended and compressed length, bore, spring dimensions or rate, mounting style, and available clearance as applicable.
Does QA1 52721 require setup after installation?
Suspension and steering work commonly requires torque verification, clearance and travel checks, ride-height or damping setup when adjustable, and a professional alignment before road use.
Installation
Follow the current QA1 instructions for this exact part number. Support the vehicle safely, compare every component before disassembly, use the specified hardware and torque values, verify thread engagement and mounting orientation, cycle the suspension through its operating range, check brake and wheel clearance, and complete an alignment when the installation changes suspension or steering geometry.
Alignment Components
Shop alignment components, camber kits, caster kits, and adjustable control arms at Black Ops Auto Works. Find vehicle-specific parts for correcting suspension alignment or preparing a performance setup, including toe links, adjustment cams, camber plates, and replacement mounts. Choose components based on your vehicle, suspension configuration, and measured alignment needs. Camber, Caster, and Toe Correction Camber describes the inward or outward tilt of a wheel when viewed from the front. Caster describes the steering axis angle when viewed from the side. Toe describes whether the wheels point inward or outward when viewed from above. Each measurement has a different role, so the right correction part depends on which angle needs adjustment. This collection includes options from Black Ops Auto Works, AAD Performance, SPC Performance, Eibach, SuperPro, Whiteline, and other suspension brands. Adjustment capability varies by product. A camber kit does not automatically provide caster...
View Alignment Components Products
Control Arms
Control arms for lifted trucks, SRT and Hellcat platforms, and off-road builds are stocked at Black Ops Auto Works. Shop tubular steel upper control arms, billet adjustable control arms, rear toe links, camber arm kits, and vehicle-specific control arm sets for Jeep Grand Cherokee and Trackhawk, Dodge Durango, Charger, Challenger, 300, and Magnum, Toyota 4Runner and FJ Cruiser, Lexus GX460 and GX470, Ford Mustang, and GM 1500 trucks. Every product is filterable by year, make, model, trim, and lift height so the correct control arm ships the first time. Black Ops Auto Works carries 789 control arm SKUs across upper, lower, adjustable, and toe link categories. What This Collection Covers Control arms connect the wheel hub and knuckle assembly to the vehicle frame and control wheel travel through compression and droop. Worn OEM control arms with loose ball joints or deteriorated bushings cause vague steering, uneven tire wear, and handling inconsistency. This collection covers arm ...
View Control Arms Products
QA1
Shop QA1 coilovers, shocks, springs, control arms, sway bars, suspension systems, rod ends, bearings, steering components, and chassis hardware by exact part number and verified compatibility. Choosing the Correct QA1 Product Match the complete year, make, model, suspension configuration, and mounting position when vehicle fitment is listed Verify dimensions, thread size and direction, bore, travel, spring rate, load, and mounting style for interface-based components Confirm drivetrain, brake, wheel, tire, exhaust, and chassis clearance before ordering Review the current QA1 application data and installation instructions for the exact part number Related QA1 Products All QA1 Products QA1 High Travel Coilover Spring QA1 C Series Rod End QA1 Proma Star Coilover Shock Frequently Asked Questions How do I confirm a QA1 product fits my vehicle?Match the listed year, make, model, and submodel, then verify suspension configuration, mounting position, dimensions, drivetrain clearance, b...
View QA1 Products
Suspension
Suspension parts and complete kits for cars, trucks, SUVs, Jeeps, and off-road builds are stocked at Black Ops Auto Works. Shop coilovers, lowering springs, lift kits, leveling kits, shocks and struts, sway bars, control arms, tie rods, ball joints, bushings, chassis bracing, alignment hardware, air suspension, and complete stage kits from Bilstein, KW, Ohlins, Fox, KING, ICON, BC Racing, Silvers, Eibach, H&R, Swift Springs, Whiteline, Energy Suspension, Moog, SPC Performance, Rough Country, ReadyLIFT, BDS, Skyjacker, Air Lift, Firestone, and Black Ops Auto Works. Start with a matched shock and spring package or a full coilover kit, then layer in sway bars, chassis bracing, and camber adjustment hardware. Every part is filterable by year, make, model, trim, and drivetrain to confirm fitment before ordering. What This Category Covers Suspension is the highest-leverage handling upgrade on any vehicle. A properly matched shock, spring, and sway bar package produces measurable i...
View Suspension Products