EBS WILL NOT EFFECT TOP END. BUT IT DOES EFFECT BOTTOM END. IF YOU WANT THE EBS SYSTEM GET THE 800 CLUTCHES. THE ONE WAY ROLLAR ON THE FRONT CLUTCH IS WAY SMALLER THAN THE OTHER EBS CLUTHES. IT MAKES A HUGE DIFFERENCE ON TAKEOFF AND HOW SMOOTH THE BELT ENGAGES. THE 800 PRIMARY CLUTCH IS ONLY 1/4 INCH LARGER IN DIAMETER THAN A NON EBS CLUTCH AT THE BOTTOM OF SHEAVE. THE OLD STYLE EBS WAS OVER 1 INCH IN DIAMETER LARGER. THAT IS LIKE LOSING FIRST GEAR ON TAKEOFF. IT WILL EFFECT HOW FAST THE ACCELERATION IS.