Myler MBB Flat Shank Rollback Correctional High Port – MB 27HP

The Myler MBB Flat Shank with MB 27HP rollback correctional high port mouthpiece is designed for advanced riders seeking refined control. The stainless steel flat shank (approximately 6¾″) offers moderate leverage, and the sweet iron mouthpiece features a high port (approximately 2″) that allows tongue relief but introduces some palate pressure when engaged. This traditional “rollback correctional” style means the mouthpiece collapses onto the outer lips and bars and rotates onto the tongue when the reins are applied, giving precise cues. The copper inlay and sweet iron encourage salivation, improving bit acceptance.

Shank Style: Black steel flat shank (~6¾″) with levers for moderate curb action
Mouthpiece: MB 27HP (high-port correctional) – sweet iron with copper inlay
Port Style: High port (~2″) for maximum tongue space but increased palate pressure
Width: Standard 5″ (confirm your horse's mouth width before purchase)
Leverage & Action: Indirect (curb) design – moderate leverage for responsive horses
Use Case: Ideal for well-trained horses and riders needing sharper response and upward direction; not for beginners
Care: Rinse and dry after use; sweet-iron mouthpiece will oxidize naturally (acceptable); check shank hardware and joints regularly

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