One full season of working with this bit is recommended before moving the horse in to the 2nd Generation Imus Comfort Bit for higher level training. Just think how much confusion is avoided, as the horse is already accustomed to the action of the curb bit when it is first introduced! (This bit is an invaluable tool for retraining horses that have become stiff and sour to harsher bits.)
The mouthpiece is 5" but it accommodates between a 4 1/2" and 5 1/2" mouth. It's pinchless so if it's a little snug (not tight) at the corner of the lips it won't be uncomfortable or interfere with the action of the curb. If it fits a little large that's okay too because the bit is designed to give a nice rolling request at the lips and there is no point when the rider takes on the reins that the bit is pulled from side to side.
All Imus bits sold through Phoenix Rising Saddles have the special 4-Beat® logo engraved for authenticity! See photo for details.
We are often asked to clarify what exactly we improved about the Imus Line of Bits.