• UMI3623-1.jpg
    • UMI3623-1.jpg

    UMI Performance Rear Coil-Over Conversion Kit - 200 lb — 1978-1996 GM B-Body | Viking Double-Adjustable | 3623-1

    Vendor: UMI Performance
    Part Number: 3623-1
    $1,089.99

    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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    UMI Performance rear coil-over conversion kit adds ride height and damping adjustment to the 1978-1996 GM B-Body platform. The kit uses Viking double adjustable shocks with 200 lb springs and provides 1 to 3 inches of lowering. It includes the brackets, shocks, springs and hardware needed for the rear conversion and is sold as a pair.

    Specifications:

    • Viking double adjustable coil-over shocks
    • 200 lb springs
    • 1 to 3 inches of lowering
    • Includes brackets, shocks, springs and hardware
    • Rear application
    • Sold as a pair
    • Part number: 3623-1

    Vehicle Applications:

    • 1978 Buick LeSabre
    • 1979 Buick LeSabre
    • 1980 Buick LeSabre
    • 1981 Buick LeSabre
    • 1982 Buick LeSabre
    • 1983 Buick LeSabre
    • 1984 Buick LeSabre
    • 1985 Buick LeSabre
    • 1991 Buick Roadmaster
    • 1992 Buick Roadmaster
    • 1993 Buick Roadmaster
    • 1994 Buick Roadmaster
    • 1995 Buick Roadmaster
    • 1996 Buick Roadmaster
    • 1978 Chevrolet Caprice
    • 1979 Chevrolet Caprice
    • 1980 Chevrolet Caprice
    • 1981 Chevrolet Caprice
    • 1982 Chevrolet Caprice
    • 1983 Chevrolet Caprice
    • 1984 Chevrolet Caprice
    • 1985 Chevrolet Caprice
    • 1986 Chevrolet Caprice
    • 1987 Chevrolet Caprice
    • 1988 Chevrolet Caprice
    • 1989 Chevrolet Caprice
    • 1990 Chevrolet Caprice
    • 1991 Chevrolet Caprice
    • 1992 Chevrolet Caprice
    • 1993 Chevrolet Caprice
    • 1994 Chevrolet Caprice
    • 1995 Chevrolet Caprice
    • 1996 Chevrolet Caprice
    • 1994 Chevrolet Impala
    • 1995 Chevrolet Impala
    • 1996 Chevrolet Impala
    • 1977 Pontiac Bonneville
    • 1978 Pontiac Bonneville
    • 1979 Pontiac Bonneville
    • 1980 Pontiac Bonneville
    • 1981 Pontiac Bonneville
    • 1977 Pontiac Catalina
    • 1978 Pontiac Catalina
    • 1979 Pontiac Catalina
    • 1980 Pontiac Catalina
    • 1981 Pontiac Catalina

    FAQ

    What vehicles does this kit fit?

    It fits the 1978 to 1996 GM B-Body platform, including the Buick LeSabre and Roadmaster, Chevrolet Caprice and Impala SS, and Pontiac Bonneville and Catalina.

    What is included in the kit?

    The kit includes the brackets, Viking double adjustable shocks, 200 lb springs and hardware for the rear conversion, sold as a pair.

    How much can the vehicle be lowered?

    The kit provides 1 to 3 inches of lowering.

    Are the shocks adjustable?

    Yes. The kit uses Viking double adjustable shocks for compression and rebound adjustment.

    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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