Overview

The Garmin 010-12236-02 is a carbon fiber mast bracket for mounting four GNX 120 instrument displays on a sailboat mast. The bracket fits mast diameters from 115 to 200 mm (4 to 8 in) and weighs 2.30 kg (5.1 lb) for the bracket only (without devices or cables).

The front panel is anodized aluminum with carbon fiber side panels, and the assembly includes snap points for a neoprene sun cover. It is meant for a clean mast install where instruments stay aligned and easy to read from the cockpit without adding a bulky pod.

Key features

• Holds up to four GNX 120 instrument displays in a single mast-mounted stack
• Fits mast diameters from 115 to 200 mm (4 to 8 in) for common cruising and racing spars
• Bracket-only weight: 2.30 kg (5.1 lb) before adding displays and cabling
• Front panel in anodized aluminum with carbon fiber side panels for a stiff, low-profile frame
• Snap attachment points for a neoprene sun cover; mounting location needs access to the top and bottom of the bracket
• Assembly hardware is included for building the bracket structure
• Mast mounting hardware is not included, since it depends on your mast and preferred fastening method
• Includes an NMEA 2000 backbone cable to extend your network up to the mast-mounted instrument location

Compatibility and fit

This bracket is intended for GNX 120 instrument displays and provides four mounting positions. Confirm your mast diameter is within the 115 to 200 mm (4 to 8 in) range, and check that the bracket location will not interfere with halyards, sail handling, reefing lines, or mast rotation (if applicable).

If you plan to use the sun cover, install the bracket where you can reach both the top and bottom edges so the snaps can be secured and released while underway.

Installation and setup

The bracket-mounting arms are not pre-drilled, so the holes and fastening approach are set by your specific mast and hardware choice. Bracket assembly hardware is provided, while the hardware that actually secures the bracket to the mast must be selected for your spar and installation method.

Plan your cable routing before final mounting. The bracket is built with cable pass-throughs so you can route the NMEA 2000 backbone neatly behind the instruments and down toward the deck gland or mast exit you already use.

Electrical and network integration

GNX instruments commonly live on an NMEA 2000 network, and this bracket includes a backbone cable meant to bring the network up to the mast instrument position. Tie that backbone run into your existing NMEA 2000 backbone and keep the layout serviceable for stepping the mast and seasonal rig work.

If the included backbone cable does not reach your network junction point, plan for a longer backbone segment rather than stretching drop cable runs beyond what your layout allows.

Who this is a good match for

This is a practical fit for sailors who want GNX 120 data at eye level on the mast for racing, performance sailing, or cockpit visibility on longer passages. It also suits refits where you want a tidy instrument stack without building a custom pod.

Maintenance and care

Rinse salt off the bracket during routine washdowns and check fasteners after the first few outings, then periodically through the season. When servicing electronics or rigging, make sure cabling remains supported and protected where it exits the mast and enters the bracket.