Finding the right bit is one of the most important steps toward achieving harmony, comfort, and clear communication between you and your horse. While choosing a bit may seem simple, the anatomy of the Icelandic horse’s mouth, the sensitivity of the tongue and bars, and the variety of bit designs make it essential to approach this decision with knowledge and care.
A Healthy Mouth Comes First
Before even selecting a bit, the guide stresses the importance of regular dental care. Sharp edges, wolf teeth, or unseen discomfort can create negative associations with rein contact and can even translate into training difficulties. A yearly check by a veterinarian or equine dentist is recommended for all ridden horses — and especially for young horses being introduced to a bit for the first time. A healthy mouth is the foundation for a willing, relaxed horse.
Correct Fit: Size Matters More Than Many Think
One of the most common mistakes riders make is choosing the wrong bit size. Research in Iceland shows that the average Icelandic horse has a mouth width of around 10.1 cm, meaning most will fit a 10.5 cm bit. However, many individuals fall outside the average, making basic measurement essential.
A bit that is too short can pinch and cause pain, while a bit that is too long may slide, irritate the cheeks, or create uneven pressure. The rule of thumb: the bit should not protrude more than 0.5 cm on each side. Riders should also test rein pressure to ensure the bit remains stable when one rein is activated.
Click here to view Understanding Mouthpieces: Comfort Through Design
Hrímnir offers thoughtfully developed mouthpieces with one priority in mind: the comfort and anatomy of the horse.
Double Jointed Bits
These distribute pressure across the tongue and bars more evenly than single-jointed bits. Hrímnir’s key innovation lies in the short middle link, which helps prevent pressure on molars and sensitive mouth corners. The patented slightly forward-twisted design ensures the bit lies ergonomically between tongue and palate.
Single Jointed Bits
These provide clearer tongue-edge pressure but can be too strong if poorly fitted. Hrímnir’s versions use an extra-small joint to minimize palate pressure and improve comfort in the typically limited oral space of Icelandic horses.
Mullen Mouth & Flexible Variants
Mullen mouthpieces offer even, steady pressure — especially helpful for sensitive horses or those that dislike movement in the mouthpiece. The flexible mullen mouth adds softness and allows subtle one-sided aids without creating sharp pressure peaks.
Different Shapes for Different Needs
Hrímnir’s mouthpieces come in two shapes:
- Ported sidebars: create room for the tongue and reduce pressure on the corners of the mouth without risking palate discomfort.
- Curved sidebars: offer a softer angle and even pressure distribution. These generally require choosing a bit 0.5 cm larger than usual.
Sidepieces: How the Bit Communicates Aids
Sidepiece design influences stability, precision, and how clearly rein aids are delivered.
- Loose Rings: encourage mobility of the mouthpiece and discourage leaning. Great for horses needing softness or relaxation.
- Eggbutt (Fixed Rings): more stability and no pinching — ideal for sensitive horses or those learning to follow lateral aids.
- Full Cheek Bits: excellent for young or stiff horses, offering precise lateral guidance and preventing the bit from being pulled through the mouth.
Understanding these subtle differences can transform communication and improve training results.
Thickness and Material: Small Choices, Big Effects
Bit thickness influences comfort: while thicker bits are milder in theory, Icelandic horses often have limited oral space, making 12 mm and 14 mm ideal.
Material also shapes the horse’s response:
- Stainless Steel: neutral and durable — good for active-mouthed or sensitive horses.
- Volcano Alloy: increases salivation and softness.
- Titanium (with copper roller): light, neutral, and ideal for sensitive horses needing a gentler feel.
- TPU: flexible, soft, and ideal for horses with sensitive mouths or beginners in bit training.
Conclusion: A Thoughtful Approach Leads to a Happier Horse
The right bit is not just equipment — it is a communication tool that influences your horse’s comfort, well-being, and performance. Hrímnir’s Bit Guide combines anatomical research, practical experience, and expert advice to make this choice easier and more informed.
Whether you ride a sensitive horse, a young horse in training, or an experienced competition horse, taking the time to select the correct bit will pay off with softer contact, clearer communication, and a more relaxed horse.
