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    QA1 GM Pro Coil Front Coil-Over Kit, Single Adjustable, 10 in 550 lb Spring, Tapered Pigtail | 1967-1974 GM | GS401-10550A

    Vendor: QA1
    Part Number: GS401-10550A
    Regular Price $789.95

    Available to order. In-stock orders typically ship in 1 to 2 business days.

    Not sure it fits your vehicle?
    Email sales@berryperformancesales.com with your year, make, model and engine, and we'll help you check fitment before you order.
    Fast Fulfillment: In-stock orders typically ship within 1 to 2 business days.
    Free Shipping on Orders Over $99 | Excludes freight shipments
    International Shipping Available: email sales@berryperformancesales.com for a quote.
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    The QA1 GM Pro Coil front coil-over kit pairs a lightweight single-adjustable billet aluminum coil-over shock with a high travel coil spring for adjustable ride height and valving control. The fully threaded shock body allows ride height to be set for the desired stance and the corner weights to be fine-tuned, while the single-adjustable valving lets the shock be tuned from a comfortable street setting to firmer performance damping. QA1's American-made high travel springs use fewer coils and a smaller wire diameter to reduce unsprung weight for faster response. The shocks bolt in using the stock mounts, are 100 percent dyno tested and serialized, and are serviceable and rebuildable through QA1 authorized service centers. Sold in pairs.

    Specifications:

    • Type: Front coil-over shock and spring kit, single adjustable
    • Shock body: Billet aluminum, fully threaded
    • Valving: Single adjustable
    • Mounting: Stock mount
    • Compressed length: 10.13 in
    • Extended length: 14 in
    • Spring: 10 in free length, 550 lb/in rate
    • Spring end: Tapered Pigtail
    • Sold in pairs
    • 100 percent dyno tested and serialized
    • Made in the USA
    • Part number: GS401-10550A

    Vehicle Applications:

    • 1973 Buick Apollo
    • 1974 Buick Apollo
    • 1967 Chevrolet Camaro
    • 1968 Chevrolet Camaro
    • 1969 Chevrolet Camaro
    • 1968 Chevrolet Chevy II
    • 1969 Chevrolet Nova
    • 1970 Chevrolet Nova
    • 1971 Chevrolet Nova
    • 1972 Chevrolet Nova
    • 1973 Chevrolet Nova
    • 1974 Chevrolet Nova
    • 1973 Oldsmobile Omega
    • 1974 Oldsmobile Omega
    • 1967 Pontiac Firebird
    • 1968 Pontiac Firebird
    • 1969 Pontiac Firebird
    • 1971 Pontiac Ventura
    • 1972 Pontiac Ventura
    • 1973 Pontiac Ventura
    • 1974 Pontiac Ventura

    FAQ

    What vehicles does the QA1 GS401-10550A coil-over kit fit?

    It fits the GM applications listed in the vehicle applications section above, roughly 1967 through 1974. Confirm the year, make, and model against that list before ordering.

    Is a spring included with part number GS401-10550A?

    Yes. This kit includes a 10 inch high travel coil spring rated at 550 lb/in along with the single-adjustable aluminum coil-over shock.

    Are the shocks adjustable?

    Yes. These are single-adjustable coil-over shocks, so valving can be tuned from a softer street setting to firmer performance damping, and the threaded body sets ride height.

    Are QA1 Pro Coil shocks sold individually or in pairs?

    This part number is sold as a pair.

    Shipping Policy
    • Free shipping on orders over $99 (excludes freight shipments).
    • In-stock orders typically ship within 1 to 2 business days. Weekend and holiday orders are processed the next business day.
    • Orders ship from Defiance, Ohio and a nationwide network of warehouses and manufacturers.
    • Items showing an ETA are not in stock yet. ETAs come from the manufacturer and can change.
    • No P.O. Boxes. International orders need a shipping quote, so email us first.

    Read the full Shipping Policy

    Return Policy
    • 30-day return window from the ship date. Returns must be approved first; email sales@berryperformancesales.com with your order number.
    • Items must be unused, complete and in the original packaging.
    • A 20% restocking fee applies, and return shipping is paid by the buyer.
    • Not returnable: installed or modified parts, opened or used programmers and tuners, custom orders, Open Box, and Clearance or Final Sale items.
    • Damaged, defective or incorrect items must be reported within 48 hours of delivery with photos.

    Read the full Return Policy

    Disclaimer

    All products are sold for off-road use only unless otherwise specified. Buyer assumes all responsibility for installation and operation. Seller is not liable for any incidental, indirect, or consequential damages — including engine failure, labor costs, or vehicle downtime — resulting from the use of any product sold.

    By making a purchase from Berry Performance Sales, you acknowledge and agree to abide by the terms and conditions of these Policies.

    For any questions or concerns, please contact us — we’re always happy to help.

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