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  • MSD Crank Trigger Wheel Kit Flying Magnet Bbf 7.25 In. Big Block Ford 429-460Ci Use With MSD 6/7/8 Series Ignition Red MSD Ignition
  • MSD Crank Trigger Wheel Kit Flying Magnet Bbf 7.25 In. Big Block Ford 429-460Ci Use With MSD 6/7/8 Series Ignition Red MSD Ignition
  • MSD Crank Trigger Wheel Kit Flying Magnet Bbf 7.25 In. Big Block Ford 429-460Ci Use With MSD 6/7/8 Series Ignition Red MSD Ignition
  • MSD Crank Trigger Wheel Kit Flying Magnet Bbf 7.25 In. Big Block Ford 429-460Ci Use With MSD 6/7/8 Series Ignition Red MSD Ignition
  • MSD Crank Trigger Wheel Kit Flying Magnet Bbf 7.25 In. Big Block Ford 429-460Ci Use With MSD 6/7/8 Series Ignition Red MSD Ignition
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    • MSD Crank Trigger Kit, Flying Magnet BBF 429-460, 7.25 in. Red | 8644
    • MSD Crank Trigger Kit, Flying Magnet BBF 429-460, 7.25 in. Red | 8644
    • MSD Crank Trigger Kit, Flying Magnet BBF 429-460, 7.25 in. Red | 8644
    • MSD8644.jpg
    • MSD Crank Trigger Wheel Kit Flying Magnet Bbf 7.25 In. Big Block Ford 429-460Ci Use With MSD 6/7/8 Series Ignition Red MSD Ignition
    • MSD Crank Trigger Wheel Kit Flying Magnet Bbf 7.25 In. Big Block Ford 429-460Ci Use With MSD 6/7/8 Series Ignition Red MSD Ignition
    • MSD Crank Trigger Wheel Kit Flying Magnet Bbf 7.25 In. Big Block Ford 429-460Ci Use With MSD 6/7/8 Series Ignition Red MSD Ignition
    • MSD Crank Trigger Wheel Kit Flying Magnet Bbf 7.25 In. Big Block Ford 429-460Ci Use With MSD 6/7/8 Series Ignition Red MSD Ignition
    • MSD Crank Trigger Wheel Kit Flying Magnet Bbf 7.25 In. Big Block Ford 429-460Ci Use With MSD 6/7/8 Series Ignition Red MSD Ignition
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    • 8644_01.jpg
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    • 8644_05.jpg
    Sale!

    MSD Crank Trigger Kit, Flying Magnet BBF 429-460, 7.25 in. Red | 8644

    Vendor: MSD
    Part Number: 8644
    Save $82
    $649.95 $731.95

    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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    Product DetailsFAQReviewsRelated Products

    This MSD Flying Magnet crank trigger kit uses four magnets embedded in an aluminum wheel and a non-magnetic pickup to deliver a stable, accurate ignition trigger signal for Big Block Ford 429-460ci engines.

    Specifications:

    • Fitment: Ford Big Block, 429-460ci
    • Diameter: 7.25 in.
    • Color: Red
    • Sensor Type: Magnetic
    • Trigger Type: 4X
    • Sensor Dimensions: 3/4 x 2.25 in.
    • Wheel Width: 3/8 in.
    • Warranty: Manufacturer's Limited 1 Year Warranty
    • Part Number: 8644

    Does not fit Cleveland blocks.

    Compliance: This part is legal for sale and use on Racing Use Only Vehicles — competition vehicles that are not registered and never operated on the street. It is against the law to install this part on an Emissions Controlled Vehicle (1966-and-newer California-certified or 1968-and-newer federally certified vehicles).

    FAQ

    What engines does the MSD 8644 crank trigger kit fit?

    It's designed for Big Block Ford engines, 429-460ci.

    Will the MSD 8644 fit a Cleveland block?

    No, it does not fit Cleveland blocks.

    Is the MSD 8644 legal for street use?

    No. It is coded for Racing Use Only and cannot be installed on an emissions-controlled street vehicle.

    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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