It works with the motor that is not equipped with a clutch. I
have a warning for you: You will not be able to get a rear
sprocket larger than the one supplied by EZM. If you
go with them, and you don't like the results you'll be
locked in and won't be able to change out sprockets. The
larger sprockets are no longer available. With the motors
equipped with a clutch, you'll have several options: different
trans and different sprockets. The original EZM works poorly with
the stock HS 142F. I know. Not completely sure how the
pacesetter performs. I wouldn't go with a pacesetter unless
you know someone who has the same motor/pacesetter
combination you are considering. Be cautious, be wise.