In the way back when the MOCO was developing the "B" motor they had trouble with the tranny not shifting due to lack of vinbration.
So the tranny was re-engineered to make it shift. No clunk......"Egad" Not only do we have a no vibration motor we now have a no clunk tranny, we might be accused of building a Jap bike!&nbsp\\;\\\\\\; So they reverse engineered the tranny to bring back the clunk. We know the MOCO can make a clunkless tranny, just spend the money for the SE 6 speed for pre six speed bikes.