Understanding How Bits Work

A bit is a piece of metal (or synthetic material) placed in the horse's mouth that allows the rider to communicate direction, speed, and collection through the reins. All bits work through pressure — they differ in where that pressure is applied and how much leverage is involved.

The golden rule: the mildest bit that achieves effective, comfortable communication is always the right choice. A harsher bit is never a substitute for training.

The Main Bit Categories

1. Snaffle Bits

The most common and generally mildest category. Snaffles work through direct pressure — when you pull the left rein, pressure is applied directly to the left side of the mouth. There is no leverage multiplication.

Snaffle sub-types include:

• Loose ring snaffle — the most common starter bit; rings move freely, encouraging a relaxed jaw
• D-ring / Dee snaffle — fixed rings provide slightly more stability and directional clarity; popular in jumping
• Eggbutt snaffle — fixed rings prevent pinching; gentle and widely used for young or sensitive horses
• Full cheek snaffle — extended cheekpieces help with lateral steering; great for young horses learning to turn

Best for: young horses, horses in early training, sensitive horses, novice riders learning feel.

2. Curb Bits

Curb bits use leverage — the shanks amplify rein pressure, applying force to the poll, chin groove (via a curb chain), and bars of the mouth simultaneously. The longer the shank, the more leverage.

• Pelham — combines snaffle and curb action in one bit; ridden with two reins or roundings
• Kimberwicke — a single-rein curb with mild leverage; popular for ponies and strong horses
• Western curb bits — wide variety of shank lengths and port heights; used in Western disciplines with a finished, neck-reining horse

Best for: trained horses with an educated mouth, experienced riders with independent hands, Western disciplines.

3. Gag Bits

Gag bits apply upward pressure on the corners of the mouth and poll simultaneously, encouraging the horse to raise its head. They are stronger than standard snaffles and require experienced hands.

Best for: strong horses in jumping or cross-country that tend to pull or get low; not appropriate for green horses or novice riders.

4. Double Bridle Bits

A double bridle uses two bits simultaneously — a thin snaffle (bridoon) and a curb (Weymouth) — each on separate reins. This combination allows very refined communication and is standard in upper-level dressage.

Best for: advanced dressage horses and riders; requires significant skill and a highly trained horse.

Key Factors When Choosing a Bit

• Your horse's training level — green horses need mild, direct-pressure bits; educated horses can work in more leverage-based options
• Your riding level — stronger bits require softer, more educated hands; a beginner with a harsh bit causes pain and confusion
• Discipline — English disciplines generally favor snaffles; Western disciplines use curb bits for finished horses; jumping uses D-rings, full cheeks, and gags
• Mouth conformation — horses with low palates need low-ported bits; thick-tongued horses do better with thinner mouthpieces; narrow jaws need narrower bits
• Bit fit — a properly fitted bit should extend approximately ¼ inch beyond each side of the mouth and sit without wrinkling or dropping

Mouthpiece Materials

• Stainless steel — durable, easy to clean, neutral taste; the standard. Shop our Horse Bit Stainless Steel and Premium Quality Horse Bit Stainless Steel options.
• Sweet iron — oxidizes to a sweet taste that encourages salivation and a softer mouth
• Copper inlay — similarly encourages salivation; often combined with stainless steel
• Rubber / synthetic — very mild; good for sensitive or young horses

When to Get Professional Guidance

If you're unsure what bit your horse needs, consult your trainer or an equine dentist before experimenting. A horse that resists, tosses its head, or braces against contact may have bit fit issues, dental problems, or training gaps — not necessarily a need for a stronger bit.

Shop Horse Bits

• Horse Bits & Bit Accessories — browse our full selection of stainless steel, premium, and specialty bits
• Horse Bit Stainless Steel
• Premium Quality Horse Bit Stainless Steel
• Premium Quality Ring Shape Horse Bit Stainless Steel
• Saddle Pads, Blankets & Accessories
• All Horse Supplies