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    • The Garrett AT 8.5 x 11 in PROformance DD Raider search coil, shown with skid plate, lower shaft and mounting hardware against a white background.
    • Close up of the lower shaft connection and mounting hardware for the Garrett AT 8.5 x 11 in PROformance DD Raider search coil.

    Garrett AT 8.5 x 11 in PROformance DD Raider Coil Kit with Cover, Lower Rod & Hardware

    Vendor:Garrett Type:Coils
    SKU: 2222400 B001
    Sale Price $155.95 Regular Price $233.93

    Out of Stock

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    The Garrett AT 8.5 x 11 in PROformance DD Raider (part 2222400) is a submersible double-D search coil for the Garrett AT Pro, Garrett AT Max and Garrett AT Gold. Garrett describes it as the right size for open field searches with good detection depth. This Serious Detecting kit pairs the coil and its cover with a lower rod and mounting hardware, so the coil arrives ready to mount on its own rod.

    Who this coil kit is for

    This kit is for AT owners who want a mid-size DD coil for parks, fields, beaches and shallow water, either as a replacement for a damaged coil or as a second coil kept on its own lower rod. The DD winding stays steady in mineralized soil and wet salt sand, where a concentric coil of the same size is more likely to get noisy.

    For trashy sites, around foundations or in tight spots, a smaller coil such as the AT 5 x 8 in PROformance DD separates close targets better. For covering big open fields faster, the AT 14 x 11 in DD Reaper covers more ground per swing. Both are in our metal detector search coils collection.

    Key features and what they mean in the field

    • 8.5 x 11 in (21.6 x 27.9 cm) semi-elliptical shape. A good balance of ground coverage and maneuverability, and Garrett's pick for open field searches.
    • DD (double-D) winding. Handles mineralized ground and salt sand smoothly and gives a narrow detection footprint that helps with pinpointing.
    • Fully submersible. Garrett rates the whole coil for use in lakes, streams and the ocean.
    • 1.2 lbs out of the box. Light enough for long sessions on an AT detector.
    • 3-year Garrett warranty. Full parts and labor.

    What is in the box

    Garrett standard contents:

    • Garrett AT 8.5 x 11 in PROformance DD Raider search coil (2222400)
    • Protective coil cover

    Added by Serious Detecting:

    • Lower rod
    • Mounting hardware: bolt, washers and nut

    Compatibility

    • Fits: Garrett AT Pro, AT Max and AT Gold
    • Does not fit: Garrett ACE series detectors, which use their own 8.5 x 11 in PROformance coil with a different connector. See our Garrett ACE 400 collection for ACE coils.

    Where it works well, and where it does not

    • Works well: parks, sports fields, plowed fields, beaches and shallow water, where an all-round coil size covers ground at a steady pace.
    • Mineralized ground and salt sand: the DD winding keeps the threshold steadier than a concentric coil.
    • Less suited: heavy iron trash and tight spots, where a 5 x 8 in coil sees fewer targets at once and fits between obstacles.

    How it compares with other Garrett AT coils

    • AT 5 x 8 in PROformance DD: smaller and lighter, better target separation in trash, less ground per swing.
    • AT 9 x 12 in PROformance Concentric: similar size with a concentric winding, which pinpoints at the coil center but is less stable in mineralized ground.
    • AT 14 x 11 in DD Reaper: larger, covers more ground in open fields, heavier on the arm.

    Browse all coils and accessories for these detectors in our Garrett collection.

    Specifications

    • Part number: 2222400
    • Size: 8.5 x 11 in (21.6 x 27.9 cm)
    • Shape: semi-elliptical
    • Winding: DD (double-D)
    • Weight: 1.2 lbs out of box
    • Submersible: yes
    • Warranty: 3 years parts and labor (Garrett)
    Product Specifications
    Specification Name Specification Value
    Color Black
    Compatible garrett Garrett AT Gold, Garrett AT Max, and Garrett AT Pro
    Search coil build Open
    Search coil shape Semi Elliptical
    Search coil size 8.5" x 11"
    Search coil type Double-D (DD)
    Water resistance Waterproof
    Wireless Wired
    Service & Support

    Warranty & Product Assurance

    At Serious Detecting, we stand behind the quality of every product we offer. Warranty coverage is provided directly by the manufacturer and may vary depending on the item. We’re here to help you understand your coverage and assist with the warranty process when needed. If you ever have questions or need support navigating a warranty claim, our team is happy to guide you.

    Technical Support & Expert Guidance

    Whether you’re setting up new gear, optimizing performance, or troubleshooting an issue in the field, our knowledgeable support team is here to help. We use this equipment ourselves, so we can offer real-world tips and step-by-step assistance to get you detecting with confidence. Message us anytime and we’ll do our best to get you pointed in the right direction fast.

    Manuals, Resources & Downloads

    Access user manuals, setup guides, safety tips, and technical documentation in our online support center. These resources help you understand your equipment, learn recommended settings, and get the most out of every hunt.

    Replacement Parts & Accessories

    Keep your equipment running strong with genuine parts and accessories. We carry coils, batteries, chargers, protective gear, digging tools, and more — fully compatible with your detector and backed by manufacturer standards. Not sure what fits your model? Just ask — we’re here to help.

    Training & Tutorials

    New to detecting or upgrading to advanced equipment? Our resource library includes helpful guides, maintenance tips, how-to videos, and expert advice from experienced detectorists. From ground balancing and coil choices to target ID basics and field technique, you’ll find the knowledge you need to level up your success.

    Customer Questions & Expert Answers

    Get real answers from outdoor explorers and our product experts. Browse questions about performance, features, and setup — or ask your own to make sure this gear fits your next adventure.

    Will the Garrett AT 8.5 x 11 in PROformance DD coil fit an ACE detector?

    No, the Garrett AT 8.5 x 11 in PROformance DD coil (2222400) fits only the AT Pro, AT Max and AT Gold. ACE series detectors use their own 8.5 x 11 in PROformance coil with a different connector, so order the ACE version for an ACE 300 or ACE 400. ACE coils and accessories are in our Garrett ACE 400 collection.

    Answered by Richard T. · October 2026

    Why does this Garrett coil kit include a lower rod?

    The lower rod lets you keep the Garrett AT 8.5 x 11 in coil permanently mounted on its own rod, so switching coils in the field means swapping the lower rod instead of unbolting and rebolting the coil each time. The lower rod and mounting hardware are added by Serious Detecting; Garrett's own box contains the coil and cover. Other coils for your detector are in our metal detector search coils collection.

    Answered by Dan P. · October 2026

    Is the 8.5 x 11 in DD coil a good choice for saltwater beaches?

    Yes, the Garrett AT 8.5 x 11 in DD coil is a solid choice for saltwater beaches, because the DD winding stays steadier on wet salt sand than a concentric coil, and Garrett rates the coil as fully submersible for ocean use. On the AT Pro and AT Max, pair it with the right ground balance setting for the wet sand. More beach-ready detectors and coils are in our beach metal detectors collection.

    Answered by John W. · October 2026

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