If you’ve ever stood in a tack room or browsed an online catalog feeling overwhelmed by the sheer variety of horse bits, you’re not alone. From soft rubber snaffles to imposing curb bits with long shanks, it can be tough to know where to start or what’s right for your horse. Maybe you’re new to riding and want the gentlest option to help your horse feel at ease, or perhaps you’re dealing with a strong, seasoned horse and need a bit that offers more “braking power.”
Whatever your situation, understanding bit severity is essential because it influences how comfortably and effectively you can communicate with your horse. A well-chosen bit gives you subtle control; a poorly chosen one might cause tension, discomfort, or even pain.
This guide breaks down how different factors such as mouthpiece design, materials, and leverage affect a bit’s severity. We’ll explore the softest bits available, look at some of the strongest options, and offer practical tips on matching the right bit to both your riding goals and your horse’s temperament.
By the end, you’ll have a clearer sense of what to look for, whether you’re starting with a young horse or refining your communication with an experienced partner.
Horse Bit Severity Chart
Below we have scored the severity common horse bits, with 1 being the softest and 10 being the most severe.
Please keep in mind that determining the severity of a horse bit is not an exact science and these ratings are based on our knowledge and research. Also, before making an decision on which bit to use, we always recommended consulting a professional.
| Horse Bit | Severity (1-10) |
|---|---|
| Eggbutt Snaffle | 1 |
| Loose Ring Snaffle | 1 |
| D-Ring Snaffle | 2 |
| Hanging Cheek Snaffle | 2 |
| Full Cheek Snaffle | 3 |
| Western Grazing Bit | 4 |
| Kimberwick | 4 |
| Pelham | 5 |
| Weymouth | 5 |
| Tom Thumb | 6 |
| Western Correction Bit | 7 |
| English Shank Bit | 8 |
| Western S-Shank Bit | 8 |
| Spade Bit | 9 |
| Gag Bit | 10 |
What Makes a Horse Bit More Severe?
There are several factors that impact the severity of a bit, including the mouthpiece, shank, and material. Learning each part will help you better understand how a bridle works.
Mouthpiece
The mouthpiece is the part of the bit that sits on the tongue and rests horse’s incisors and pre-molars. Mouthpieces can be straight or jointed, with common pieces including chain, single, twisted, double, mullen, or ported.
The thinner the mouthpiece, the more severe it will be. In addition, bits with more texture, such as chains or twisted wire, will be more severe.
Shank
Curb bits have shanks, which are pieces on the side of the bit. They allow for leverage and are used in several different disciplines. Shanks can be a couple of inches long to five or six inches. The longer the shank, the more severe the bit tends to be. A rider should have quiet hands when using a bit with a shank.
Material
The most common materials for bits include stainless steel, copper, and sweet iron. Copper and sweet iron offer a sweet taste and can encourage salivation, helping a horse to relax. In addition, bits can also be made from leather, rubber or synthetic materials.
While rubber bits are softer than metal, they can wear down and cause sharp edges that can be uncomfortable.
What Are the Softest Horse Bits?
Typically, the softest bits are thick, rubber mouth snaffles with no joints. These bits rest gently in the horse’s mouth, exerting minimal pressure and providing a comfortable introduction to bridling.
Classic options like eggbutt, loose ring, and D-ring snaffles also rank among the mildest. These designs are popular with young horses in training and beginner riders who are still developing their feel.
Starting with the mildest bit possible is always a good practice, as it promotes trust and encourages your horse to respond softly. If a gentler bit isn’t effective due to leaning or pulling, you might consider a slightly stronger option, but never as a substitute for proper training or soft hands.
What Are the Strongest Horse Bits?
On the other end of the spectrum, bits that combine leverage with harsh textures and narrow mouthpieces become significantly more severe. For example, a curb bit outfitted with a twisted wire mouthpiece applies intense pressure, making it a severe choice that’s generally discouraged for welfare reasons.
Gag bits, which apply pressure to the poll and lips to encourage a horse to stop leaning, are also considered among the most severe. Because of their potential to cause discomfort or pain when misused, these stronger designs should be reserved for experienced riders who know how to maintain light, controlled contact.
Are Horse Bits Cruel?
Not necessarily. A bit is just a tool, and its impact depends on how it is used. Rough or heavy hands can turn even a soft snaffle into a source of discomfort, while a skilled rider with light, educated hands can use a more complex curb bit effectively and without causing distress.
Proper fit is equally important – a poorly fitted bit can pinch or press into sensitive areas, regardless of its type. Choose a bit that matches your horse’s level of training and temperament, and consult a trainer if you’re unsure. With careful selection, gentle handling, and regular maintenance, a bit can serve as a subtle and humane communication tool.
How to Make Using a Bit Kinder for the Horse
To ensure your horse is comfortable in its bridle, focus on using the right bit for their needs and fitting it correctly. A good starting point for most horses and riders is a mild snaffle, especially for beginner riders or horses in early training stages.
Working with a trainer can help you determine the best bit for your horse and discipline. Some horses may require a stronger bit for advanced maneuvers, such as the double bridles used in upper-level dressage for refined communication.
Regardless of the type of bit, soft, steady hands are essential for maintaining your horse’s comfort. Avoid heavy or jerky rein movements, and always ensure the bit is adjusted to sit properly in the horse’s mouth.
By prioritizing fit, proper handling, and your horse’s responses, you can make bit use a positive part of your riding experience.
Why Bitless Bridles Could Be the Solution
Bitless bridles have become increasingly popular in recent years. Similar to hackamores, bitless bridles do not have bits and instead rely on applying pressure on a horse’s head for communication. While hackamores apply pressure to the nose, poll and chin, bitless bridles apply pressure all over the head.
Bitless bridles and hackamores can be a great option, as they can be comfortable for horses and offer a great alternative for communication from traditional bridles. They can be particularly ideal for horses with sensitive mouths.
However, an ill-fitting bitless bridle can cause harm to a horse, as placing pressure in the wrong spots can be painful. In addition, not every horse will respond the same to the pressure of a bitless bridle.
While hackamores are permitted in some divisions, bitless bridles are not allowed at shows as they don’t provide the same level of control as traditional bridles.
Common Mistakes to Avoid
It’s easy to run into a few stumbling blocks when choosing and using bits. Being aware of common mistakes helps you steer clear of unnecessary frustration and discomfort for your horse.
- Choosing by Looks Alone: A trendy bit might catch your eye, but function and fit always come first.
- Ignoring Proper Fit: Even a gentle bit can feel harsh if it’s too big, too small, or adjusted incorrectly.
- Skipping Expert Input: A quick chat with a trainer, a seasoned rider, or even your vet can save you time and help you find the right bit faster.
Signs Your Horse’s Bit May Not Be Working
Sometimes the first clue that a bit isn’t suitable comes directly from your horse. Look out for behaviors that suggest discomfort or confusion.
- Head Tossing or Avoidance: If your horse tosses their head or refuses to settle into the contact, it may be reacting to discomfort.
- Unusual Mouth Movements: Excessive salivation, gaping, or chewing at the bit might mean it’s pinching or causing pain.
- Resistance or Tension: A horse that’s suddenly resistant to turning, slowing down, or stopping might not be happy with its current setup.
Maintaining and Cleaning Your Bit
A clean, well-cared-for bit not only lasts longer but also feels better in your horse’s mouth.
Rinse the bit with warm water after each ride to remove saliva and debris. Occasionally, give it a gentle scrub with a mild soap, making sure to rinse thoroughly. Inspect rubber or synthetic bits for wear and replace them if they develop sharp edges or cracks.
Questions to Ask Your Trainer or Expert
Before making significant changes, it’s always wise to seek professional input. Consider asking:
- Is my current bit appropriate for the discipline and level my horse and I are working at?
- Can you watch me ride and give feedback on my hand position and rein pressure?
- Which bit or bitless option would you recommend based on my horse’s behavior and reactions?
- How can I ensure proper fit and avoid common problems like pinching or excessive pressure?
Finding the Right Balance
Choosing the right bit is a process of trial, knowledge, and empathy. It is always best to start soft and work your way up if needed. Do your research to find what bits are appropriate for the discipline you ride and consult a trainer to help you determine what is right for your horse’s needs.
Above all, remember that a gentle, educated hand and a well-chosen bit can create a beautiful, harmonious partnership between you and your horse.
