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    Sale!

    QA1 GM Pro Coil System Double Adjustable | 1967-1974 GM F & X-Body | GD401-10450A

    Vendor: QA1
    Part Number: GD401-10450A
    Save $32.04
    Sale Price $964.95 Regular Price $996.99

    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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    This QA1 GM Pro Coil System delivers fully adjustable ride height and valving control. It uses independent compression and rebound double adjustable valving in a lightweight billet aluminum body with a fully threaded body for ride height adjustment. The kit includes a 10 inch high travel spring rated at 450 with a tapered pigtail end. It has a compressed length of 10.13 inches and an extended length of 14 inches. These systems are sold in pairs, are 100 percent dyno tested, serialized and made in the USA, and are used in drag racing, street performance, autocross, road racing and street rod applications.

    Specifications:

    • Type: GM Pro Coil System (coil-over shock and spring)
    • Valving: independent compression and rebound double adjustable
    • Body: lightweight billet aluminum, fully threaded for ride height adjustment
    • Spring: 10 in high travel, 450 rate, tapered pigtail end
    • Compressed length: 10.13 in
    • Extended length: 14 in
    • Sold in pairs
    • Made in the USA, dyno tested and serialized
    • Part number: GD401-10450A

    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 is included with the GD401-10450A Pro Coil System?

    It includes QA1 billet aluminum double adjustable coil-over shocks with 10 inch 450 rate high travel springs and is sold in pairs.

    What valving does this system use?

    It uses independent compression and rebound double adjustable valving, so compression and rebound can be tuned separately.

    Is the ride height adjustable?

    Yes. The fully threaded shock body lets ride height be adjusted for the desired stance and corner weighting.

    What vehicles does this kit fit?

    It fits the GM applications listed in the vehicle applications section above.

    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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