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    QA1 Ford Mustang II Pro Front Coil-Over System 7/16in Bushing Single Adjustable 8in 500 lb/in | 1974-1978 Ford Mustang II | MS303-08500

    Vendor: QA1
    Part Number: MS303-08500
    Save $85.18
    $789.95 $875.13

    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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    Product DetailsFAQReviewsRelated Products

    QA1's Mustang II Pro Coil Shock System is a front coil-over conversion for the Mustang II and street rod applications that use Mustang II front suspension. This single adjustable version uses a 7/16in bushing and includes an 8in spring with a 500 lb/in rate. The fully threaded shock body delivers the lower ride height and low stance builders look for and allows ride height and weight balance adjustment. Each system includes two QA1 high performance shocks, two specially designed springs and all mounting hardware. The lightweight billet aluminum coil-over shocks are 100% dyno tested and serialized, install as an easy bolt-in and are made in the USA.

    Specifications:

    • Type: Mustang II front coil-over system (Pro Coil)
    • Adjustability: single adjustable valving
    • Bushing: 7/16in
    • Spring: 8in spring, 500 lb/in rate
    • Shock body: lightweight billet aluminum, fully threaded
    • Ride height adjustable
    • Includes two shocks, two springs and all mounting hardware
    • 100% dyno tested and serialized
    • Bolt-in installation
    • Made in the USA
    • Sold in pairs
    • Part number: MS303-08500

    Vehicle Applications:

    • 1974 Ford Mustang II
    • 1975 Ford Mustang II
    • 1976 Ford Mustang II
    • 1977 Ford Mustang II
    • 1978 Ford Mustang II

    Installation Instructions

    FAQ

    What bushing size does this system use?

    This version uses a 7/16in bushing. QA1 also offers a 1/2in bushing version of the Mustang II Pro Coil system.

    What is included?

    Each system includes two QA1 high performance shocks, two specially designed springs and all mounting hardware, and is sold in pairs.

    Is the ride height adjustable?

    Yes. The fully threaded shock body allows ride height adjustment for a lower stance and helps fine-tune weight balance.

    Is it dyno tested?

    Yes. The lightweight billet aluminum coil-over shocks are 100% dyno tested and serialized and are made in the USA.

    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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