Copyright © 2016  Grand Rapids Technologies, Inc.

Electronic Flight Instrumentation for Experimental Aircraft Since 1991

7” Sport EX - Starting at $1500

EX is for Expandable, Extra Light, and Extra Value…

Starting at only $1500, the Sport EX puts a Primary Flight Display EFIS in your panel at an unbeatable price. Software options let you purchase what you need now, and expand later, without removing the EX from your panel. Built on more than two decades of avionics experience, and using the industry’s only AHRS that can operate unaided, the base model provides primary flight functions and engine pages which can be driven by any GRT EIS engine monitor.  The base model even includes synthetic approach to any runway, and depiction of obstacles on the PFD screen.

Base Model Features

Every Sport EX features:

Customize it your way…

Options allow you to move the Sport EX from the basic model, to a full-featured IFR capable EFIS. These options include:

Synthetic Vision

The optional synthetic vision, with its 10 mile range, provides intuitive terrain awareness. This awareness is essential whey flying in mountainous areas, and also creates a natural sense of height above the ground, location, and direction of flight. 3-D way-points, obstacles and runways, make navigation simple and help protect you from the threat of towers.


Ten split-screen combinations are included, combining two or three views into one screen of the PFD, map and HSI, and engine monitoring.  Information is clearly presented, making it practical to fly with a single screen and rarely touch a button. For dual screen installations the split-screens provide a single-screen reversionary mode suitable for IFR flight.

Dual-Screen Optimized

Dual screens were never an after-thought. The Sport SX was designed to function together, providing more information, interfacing and redundancy. Illustrated below are two screens configured for takeoff. We like displaying the EGT time history for takeoff.  It allows for differentiating between engine problems affecting a single cylinder, and those affecting the entire engine-potentially valuable data for making critical decisions.

Below two Sports as they are configured after initial climb-out. The map now replaces the engine page, and the engine strip is shown on one of the screens. Either screen could show the engine strip. The PFD has the terrain mode turned on. Choosing the screen is one button push away.

VFR Friendly

Often the days we fly do not require constant monitoring of the airplanes attitude. Airspeed, altimeter, and a map are all we need, with the PFD attitude to back us up if conditions change. We love those days and so does the Sport SX. That is why we allow you to show airspeed and altimeter tapes on your moving map. The Sport SX rounds everything out with wind and destination information.

Above the green arc shows where the airplane will be when it reaches a pre-selected altitude (ground level in this case). Extended centerlines make it easy to line up on the correct runway, and is essential at night.

Obstacle Alerting

The greatest value of obstacle alerting occurs when you find yourself forced to fly under an overcast in less than desirable visibility. At times like this, it must be effortless to understand such threats.  That is why we show your threats on the PFD and not just the map. We show you the threat in the exact place you will be looking-the PFD. They appear in the same location out the window as they appear on the screen. Simple, and potentially life saving. (Shown here with the synthetic vision option, but also shown without this option.)

Display ADS-B Traffic and Weather

Include the ADS-B Option, and the Sport EX is ready to GRT EIS to display weather and traffic from a large variety of ADS-B receivers, including the popular Stratux/Raspberry Pi based receivers.  Weather displays include weather radar overlay, as well as metars, temporary flight restrictions, and other weather functions as they become part of the ADS-B system. Traffic, with voice alerts, is displayed on the map, and on the primary flight display, just as the airplane appears out the window.

Representative screen shots (taken from a Sport SX) are shown below.

Oshkosh Arrival

Basic or Comprehensive Engine Monitoring

Connecting any GRT EIS to the EX provides you with comprehensive engine monitoring, but you can start simpler with the Basic Engine Monitoring Option. This low-priced option includes the sensors to provide oil pressure, oil temperature, tachometer, hourmeter and flight timer, which wire directly to the Sport EX. The engine data appears on split-screens, and the full graphical engine monitor pages. Later, when you choose to upgrade to an EIS, the sensors are also usable with the EIS, reducing the upgrade cost.

Connect and EIS for Comprehensive Engine Monitoring

Having produced the EIS engine monitor for over 20 years, we’ve accumulated a great deal of personal and customer engine monitoring experience. From this came such exclusive features as the exhaust gas temperature (EGT) time history. A simple graph of the last two minutes of all EGTs, our engine monitoring system makes it effortless to distinguish between engine problems affecting one cylinder, or the entire engine. This distinction could be essential when making decisions in response to engine problems, especially at critical times such as initial climb out.   We find it so useful that we never takeoff without it displayed, and we recommend you don’t either.

CHT time history also proves useful by making the trend obvious. This is especially useful in high-performance airplanes, such as RV’s, Lancairs, and all pushers, where engine cooling can require some pilot technique to manage. It leaves no doubt which way temperatures are headed.

Finally, we love the specific fuel consumption display.  Its measure of engine efficiency that confirms when you have leaned properly, and tells you when you need to lean again.

Simple Operation

Dual rotary knobs and 5 lighted softkeys make up the pilot interface. All are high tactile force, which is optimal for operation in turbulence. Pilots upgrading an older Horizon WS screen will find the user-interface practically unchanged. Primary knob functions are heading selection and baroset. Pressing any softkey brings up secondary knob functions and softkey labels. Simple, effective and efficient.

GRT Safe-Touch – Your PFD is now an Autopilot Mode Control Panel!

GRT Safe-touch option provides touch screen interaction without the risk of inadvertent activation. We us the simplicity of the touch screen for making selections, such as choosing the leg of the flight plan to be modified, with the positive action of a softkey press before activating the selection. Simple and secure, even in turbulence, nothing happens until you confirm or cancel and touch screen edits with a softkey press.

Touch screen functions will be added over time, but the first release will include at least the following:

Situational Awareness without Synthetic Vision

Deferring synthetic vision does not mean you are sacrificing situational awareness. The Sport SX shows obstacles and runways on the screen as they appear out the window, even without the synthetic vision. The highway-in-the-sky guidance for the synthetic approach still delivers the sense of reality necessary to make any approach easier and more precise.

The Source of the Attitude

The integrity of an EFIS is dependent on the integrity of the attitude data that drives it. GRT Avionics has always lead the way with the only AHRS in the industry that can operate without airspeed or GPS aiding. The same adaptive AHRS that is used in our stand-alone AHRS, is built into the Sport EX.  Read more about the latest generation of AHRS technology here.

The Connectivity You Need

Three serial ports in and out (optional with six), a USB port, and a dedicated magnetometer port, allow for great flexibility within your panel design. An optional ARINC 429 interface can also be added, while still retaining all serial ports, for connectivity with IFR GPS navigators, such as the G430/650/750.

Autopilot Ready

The Sport EX includes autopilot functionality.  Just add GRT servos and you are on your way to a fully automated cockpit. Like our GRT EFIS systems, it can also control an external autopilot. Even without servos, all autopilot functions are available to drive the flight director, giving you a single cue to follow, making you the autopilot, and simplifying hand flying while improving accuracy. Read more here.

Already own an autopilot? Just wire it to the Sport EX, and the Sport will couple it to all your navigation sources!

Engine Data with a Bonus

Engine data is provided to the Sport EX via the Engine Information System (EIS).  The EIS is a complete instrument with a display and user-interface. It may be remotely mounted, just like any data collection device, but it  can also be mounted in the instrument panel as a primary or backup display of engine data. In tandem seating airplanes it can be used as an instrument for the rear seat. Engine limits can be set in the EIS and can be used to drive its own warning light, even when remotely mounted. Have room in your panel? We recommend you mount it there. You will come to appreciate this time-honored engine monitoring instrument, even if it isn’t as colorful as our EFIS.

NEW!  Angle-of-Attack (AOA) Sensing/Stall Warning

Angle-of-attack sensing is now available for all current models of the GRT EFIS and as an upgrade to all versions of the Mini-EFIS,  SX200A EFIS (identifiable by their digital magnetometer) and Adaptive AHRS.  Sensing is via a two-port 45 degree pitot tube, such as those commonly available from a variety of manufacturers, or using a probe fashioned by the builder.  This method has no moving parts, and allows the use of heated pitot tubes that preserve the stall warning function even in the presence of icing.

The GRT Avionics AOA function drives on-screen AOA symbology that shows too fast/too slow/optimal approach speeds, as well as stall warning.  In addition, an audio output is provided on the SX200A, HX, and HXr display units.  This audio provides an approaching stall warning annunciation (a pulsating tone that varies with proximity to the stall warning angle) and a solid tone indicating stall is imminent.

We support that!

We are also kitplane builders, and have always supported the spirit of experimental aircraft by providing the builder with as many options as possible. This is why we provide free software support for the Sport SX for the following equipment:

(If there is a device that you don’t see on this list, and you would like the EX to interface with it, drop us a line! We are always willing to consider new devices, and thanks to the extensive interfacing and powerful processor within the EX, future growth is built-in!)

The Quality you have come to expect from GRT

You would expect the industry’s leading AHRS and the 20+ years of avionics experience to be reflected in the hardware and software design, but what you might not anticipate is the no compromise approach to its mechanical design. The powder-coated bezel is cut on our in-house CNC milling machine from solid aluminum billet, allowing the Sport Ex to be a structural part of your panel. The solid aluminum pitot/static block assures high-integrity/zero leak pitot static connections. Quality is never compromised.


Easy Upgrade Path from Older Horizon Systems

The Sport EX shares the same wiring as our previous Horizon systems.  (Note: Gray Code altitude encoding is not supported by the Sport EX.)

Sport EX Options Selection and Pricing

Order exactly the options you want, or choose a discounted package. The choice is yours, and remember, EX is for expandable...options can be added at any time, and most are just require a software key to don't even have to remove it from your panel.


Basic Primary Flight Sport EX Package: $1500

Base Model –Connecting power and ground, pitot and static, and you are flying!

The ideal solution for sport airplanes, such as Jabirui, Sonex, Zenith, Just Aircraft, Kitfox, Avid Flyer,  and other airplanes that simply can't justify an expensive panel. The base model gives you everything you need to go flying, and installation couldn't be easier.  Have, or planning on adding a Grand Rapids Technologies EIS? Graphical engine monitoring pages are built right in, including the highly valuable EGT time history.  The included VFR autopilot function allows you to add servos for altitude hold, GPS coupling, and heading/track selector.

Basic Full EFIS Sport EX Package: $1900

Base Model

Basic Engine Monitoring

Moving Map Option (Includes sensors for tachometer, oil temperature, oil pressure. Also provides flight timer and hourmeter).

Adding the basic engine monitoring option and the moving map option gives you a full EFIS solution at an unbeatable value. Equipped this way, your Sport EX provides primary flight display, engine monitoring, and moving map in rock-solid EFIS with a beautiful sunlight-readable screen. The convenience and readability makes the map option a big improvement over small portable GPS or tablet computer apps. The map option also shows ADS-B traffic and weather when the ADS-B display option is added.  Installation couldn't be easier...connect 6 wires, pitot and static, and go fly. An EIS can be added at anytime for full engine monitoring, and uses the sensors in the basic engine monitoring option.

Advanced Sport EX Package: $2400.  Save $140 over options purchased separately.

Base Model

Synthetic Vision

Moving Map

ADS-B Displays

Bluetooth Interface

6 Serial Ports

The most popular Sport EX solution, this package combines the features that make VFR or IFR flying comfortable in sport and experimental airplanes. Faster airplanes, and those used for more cross-country flying are more likely to encounter marginal conditions.  The synthetic vision and ADS-B display of weather and traffic adds confidence in these conditions. The six serial ports provide plenty of interfacing options.  Great with a second screen. Add servos and let us do the flying for you.

Advanced Touch Sport EX Package: $2875.  Save $340 over options purchased separately.

All the features in the Advanced Sport EX Package, plus:

IFR Autopilot Functions


Ideal for IFR or VFR, this package includes all the features of the Advanced Sport package, plus the convenience of a touchscreen and an autopilot/flight director with climb/descent and vertical navigation coupling.   

Digital Magnetometer – Buy it or share it!  

Already have a GRT digital magnetometer? You can share its output with the Sport SX...and best yet, its free.

Adding a digital magnetometer provides more than just heading for your EFIS. It allows your EFIS to calculate wind speed/direction in flight, and provides a yaw reference for the AHRS. This yaw reference means your attitude does not require GPS or airspeed industry exclusive that preserves the integrity of your attitude data.

Installation couldn't be easier. The digital magnetometer senses its roll and pitch orientation when you mount it. Two wires plus ground completes the wiring.

Click to download a complete pricing and comparison guide.


Mounting Dimensions and Full-Size Templates (PDF)

Connection Definitions and Pinout (PDF)

Installation Manual (PDF)