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    QA1 Coil-Over Conversion Kit | QA1 Proma Star Series Struts, 2.5 in. Spring | COK113

    Vendor: QA1
    Part Number: COK113
    Save $18.55
    Sale Price $59.95 Regular Price $78.50

    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 COK113 is a coil-over conversion kit that includes the hardware to mount a 2.5 in. inner diameter coil spring onto any QA1 Proma Star Series aluminum strut. The kit includes enough components for one individual strut and fits QA1 Proma Star struts in the Hx01, Hx03, and Hx05 range.

    Specifications:

    • Type: coil-over conversion kit
    • For QA1 Proma Star Series aluminum struts
    • Spring: 2.5 in. inner diameter
    • Fits QA1 Proma Star struts (Hx01, Hx03, Hx05 series)
    • Includes components for one individual strut
    • Part number: COK113

    FAQ

    What is the QA1 COK113 used for?

    It provides the hardware to mount a 2.5 in. inner diameter coil spring onto a QA1 Proma Star Series aluminum strut, converting it to a coil-over.

    Which struts does it fit?

    It fits QA1 Proma Star Series struts, including the Hx01, Hx03, and Hx05 range.

    How many struts does one kit cover?

    Each kit includes enough components for one individual strut.

    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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