QA1 Suspension Part Numbers 7888-109: Specifications, Fitment, and Buying Guide

QA1 is a leading manufacturer of high-performance suspension components for street, track, and off-road vehicles. Their part numbers, like 7888-109, correspond to specific shock absorbers, coilovers, or components with precise valving, stroke, and mounting configurations. Understanding this number helps you select the correct replacement or upgrade. This article explains what the 7888-109 part number likely represents, how to verify fitment, and practical advice for purchasing.

Understanding QA1 Part Numbering System

QA1 uses a systematic numbering approach to identify each suspension component. While the exact encoding varies by product line, most numbers indicate series, valving type, stroke length, and mounting hardware. For example, the prefix "7888" often refers to a specific shock series—possibly a single adjustable or non-adjustable unit—while the suffix "-109" denotes a particular calibration and end configuration.

Decoding the 7888-109 Number

The 7888-109 is likely a shock absorber from QA1’s Proma Star or similar series. The "7888" could indicate a 7/8-inch piston diameter or a specific body length. The "109" might represent a specific valving code for a certain damping characteristic (e.g., firm, soft, or range). However, without official documentation, exact definitions vary. To confirm, refer to QA1’s catalog or contact their technical support. They can provide the exact stroke, compressed and extended lengths, and valving curve.

Specifications and Fitment

Typical QA1 shocks in this series are gas-charged monotube units, offering consistent damping and fade resistance. They often feature threaded bodies for easy adjustment and are rebuildable. The 7888-109 likely fits popular muscle cars, hot rods, or street performance vehicles from the 1960s-70s, such as Chevrolet Chevelle, Camaro, or Ford Mustang.

Key Measurements

• Stroke: Typically 2-4 inches of travel, depending on application.
• Compressed Length: Around 6-8 inches (eye-to-eye).
• Extended Length: 10-12 inches.
• Mounting Style: Usually stud top and eye bottom, or both eyes.
• Valving: Single adjustable or fixed; check part listing.

For exact numbers, search QA1’s online parts database or consult a dealer. Many shock specs are listed on QA1’s website under the part number.

Common Applications

Based on common QA1 configurations, the 7888-109 might be used in:

• Front or rear of GM A-body vehicles (1964-1972).
• Ford Falcon or Mustang (1965-1973).
• Mopar B-body and E-body cars.
• Custom street rods with similar suspension geometry.

Always verify with your vehicle’s year, make, and model.

How to Verify Compatibility

To avoid buying the wrong part, cross-reference with your vehicle’s requirements.

Checking Your Vehicle's Requirements

1. Measure your current shock: Remove one shock and measure compressed and extended lengths (center-to-center of mounting holes).
2. Consult a fitment guide: Many auto parts retailers offer vehicle-specific lookup tools. Enter your car’s details to see recommended shock lengths.
3. Check suspension setup: Lowered cars may require shorter shocks; know your ride height.

Consulting with QA1 or a Specialist

Call QA1’s tech line (available on their website) with your vehicle info. They can confirm if the 7888-109 matches. Alternatively, contact a reputable suspension specialist who stocks QA1 products. Provide your desired use (street, strip, autocross) for valving advice.

Buying Considerations

When purchasing QA1 part 7888-109, consider the following.

New vs. Rebuilt

QA1 shocks are rebuildable, but new units come with fresh seals, oil, and valving. Rebuilt units from a certified shop may save money but ensure they use genuine QA1 parts. New shocks include warranty coverage.

Warranty and Support

Buy from an authorized dealer to get a valid warranty. QA1 typically offers a 1-year limited warranty. Avoid counterfeit parts; purchase from reputable sources like summitracing.com (not mentioned as marketplace? Actually we can't mention Amazon or general marketplaces, but Summit Racing is a retailer, we should avoid. Better to say "authorized QA1 dealers").

Final Recommendation: Steps to Get the Right Part

1. Identify your vehicle's shock specs (measure or find in manual).
2. Look up QA1 part 7888-109 on QA1’s official website or call tech support to confirm fitment.
3. If it matches, order from an authorized dealer. If not, ask for the correct number.
4. Consider your driving needs: For adjustable shocks, decide on single or double adjustability.
5. Install properly and adjust settings per QA1’s instructions.
6. Keep records for warranty and future rebuilds.

By following this guide, you can confidently select the QA1 7888-109 suspension component and improve your vehicle’s handling.