NEW BIG DOG MOTORCYCLES SPEEDOMETER SENSOR. PART # 4122-03R. THE PIGTAIL ON THIS SENSOR MEASURES APPROX 22".
BASE IS THICK AND MEASURES APPROX 3/8". LOOK AT YOURS BEFORE BUYING, MOST BIG DOG SPEEDO SENSORS ARE 1/4" THICK.
I BELIEVE THESE WERE USED ON 2004 BIG DOG BULLDOG ONLY.