(2 customer reviews)


RTA-17 Style Deck Plate Adapter (Re-use your existing holes!)

SKU: BMA12 Categories: ,


Already have an RTA-17, MKA-21 or similar mount already installed or previously installed?  This deck plate adapter made from very strong 0.50″ thick 6061-T6 Aluminum will allow you to install an SS-7-HD or SS-9-HD mount and use those same four (4) holes in your deck and completely eliminate the need for any new holes in your deck!  The adapter will add 0.50 inches of height to the mounting surface and becomes the surface that any of our SS series mounts attach to.  Compatibility is guaranteed when replacing a MKA-21, RTA-17 or any adapter that shares the same bolt patterns with those models.

Dimensions / Compatibility

  • Length: 13 to 15 inches (Varies to match the length of the mount being used)
  • Width:  4.0 Inches
  • Height:  0.50 Inches

Trolling motor models that typically use these mounts include:

  • MotorGuide Xi5, Xi3
  • Minn Kota Terrova, Powerdrive, Riptide and Ultera
  • Rhodan HD GPS anchors
  • Water Snake models
  • Many other brands that share the same bolt patterns as above


Additional information

Weight 5 lbs
Dimensions 12 × 3.5 × 0.5 in

2 reviews for BMA-12

  1. Ed Garza

    Used on my 17′ Mako, had previous holes in deck from RTA-17

  2. David Steward

    I had the MKA-21 mounted on my Triton T17 Crappie Pro. I did not want to drill new holes in the deck. I used the 4 holes from my MKA-21. It was a very easy installation, very quick too, I’m impressed (I even called them to let them know how great it was). I got the 9hd mount with this and my Terrova slides back 9 inches and does not hit the bow roller on the trailer anymore. These guys really know what they are talking about. I got the exact mount I needed.

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