Myler Eggbutt MB04

If your horse needs less tongue pressure but more stability in the contact, the Myler MB04 Eggbutt is a refined step forward.

This Level 2 mouthpiece features a small port that introduces true tongue relief, allowing the horse to soften, swallow, and relax into the contact. As the horse works correctly, the port acts as a release and reward, encouraging a more consistent connection.

The curved mouthpiece wraps around the bars and lips, forming a soft U shape to eliminate pinching and reduce resistance. Paired with the eggbutt cheek, this creates a more stable, direct feel than a loose ring, making it ideal for horses that prefer less movement in the bit.

Best for

• Horses that need tongue relief
• Inconsistent or resistant contact
• Horses coming off single-jointed bits
• Green horses or those being re-schooled
• Riders wanting more stability than a loose ring

Key benefits

• Small port allows tongue relief and relaxation
• Encourages softness through reward-based pressure release
• Stable eggbutt cheek for clearer, more consistent contact
• No pinching or sharp collapse
• 70mm cheekpieces 
• 12mm mouthpiece thickness

Bit fitter insight

A go-to when you need to introduce tongue relief without losing control or stability. Particularly effective for horses that improve with comfort, not restriction.