Saddle Diagram

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Checking the Fit of your Saddle

Goal of Fit: Bar Contact to the Horse’s Back

The bars protect the spine and distribute pressure from the rider’s weight evenly across the horse’s back. Larger riders and performance saddles need longer bars to give more contact area to distribute pressure.

Checking the Fit of your Saddle

The tree has two main factors that determine the fit; gullet width and bar angle. The combination of the two factors makes for slight variations in the saddle industry. There are not any standards or definitions of specific tree sizes, but each saddle builder provides a description to give an idea of the size of horse the tree should fit.

Gullet Width or sometimes referred to as bar spread is the measurement 2 inches below the narrowest part of the gullet, even with the side conchos. This is the most common factor because we can measure it more easily. When measuring, make sure you’re underneath the bars, not in front of the saddle.

A narrow gullet width will keep the saddle perched higher. A wider spread will drop further down on the horse’s back.

Bar Angle is not often measured but the angle needs to be as close to the angle of the horse’s back as possible.

A narrow or tight angle will make contact at the bottom of the bars, not the top. A wide angle will make contact at the top of the bars, not the bottom.

Approximate degrees (+/- 3 degrees):
86 degrees - Normal/Narrow Angle
90 degrees - Wide Angle
94 degrees – Extra Wide Angle

Other Factors

Bar Flare: The bars will flare to some degree in the front and back of the saddle. The front will flare away from the horse to allow for shoulder movement. The back may flare to keep the bars from digging into the croup.

Bar Slope or Rock: The curve of the horse’s topline should be as close to the shape of the bars as possible.

Bridging: When the bars make contact in the front and back of the saddle, but not in the middle. It causes what looks like a bridge across the dip in the back. The weight of the rider is carried only at the ends of the bars causing a lot of pressure that can result in white hairs and sores.

Rock: when the bars bend more than the horse needs. This is the opposite of bridging and less common. The saddle may tip forward, though that could also be from a saddle that is too wide in the front. Rock is found on horses with a flat toppling.

Tree Sizes

Semi-QH: Semi Quarter Horse can be referred to as Medium, Regular, or QH bars. This tree size has a higher pitch or angle to the bars. It’s for the horse with a more defined wither. (1/2 Arab, Appendix, Thoroughbred, etc).

Full-QH: Full Quarter Horse or FQHB can be referred to as Wide (usually 7” gullet). The angle is flatter compared to the Semi-QH tree. This is for horses with a broad shoulder. They’re considered mutton withered or a less pronounced wither. (Quarter Horse, Paint, etc)

Arabian: Have a narrow front (usually 6.5" – 6.75" gullet) similar to the Semi-QH bar but the back of the saddle has a flatter pitch angle. So the saddle goes from a little narrow in the front to flatter or wider in the back. Can sometimes fit non-Arabian horses.

Gaited: The gaited tree has a higher gullet to accommodate the higher withered horses. They usually have a wider or flared front to allow for shoulder movement. The tree narrows toward the back where the bars have more pitch. The gaited saddles usually have more rock to the bars. (Tennessee Walker, Fox Trotter, etc)

Haflinger: Short backed, mutton withered – these trees have a flatter pitch to the bar angle and very little rock. Usually a 7.5" gullet, they’re often used on other large horses needing an extra wide tree.

Draft: Usually an 8" gullet to fit on large draft horses.