there are more differences in the older clutches than the obvious plates
the parts are not interchangeable between the older and newer
put the wrong spring cup on and the clutch will not open far enough to let the belt
ride freely on the bearing
Dam, wish I needed a set. These will go fast, especially to a 17-18 guy with no updates and 4K+ miles not wanting to deal with a rebuild. Could swap these in and sell the old ones and recoup big chunk of the cost. The early /mid 18' and older clutches are def not as good as these newer ones with all the updates to the sliders, cup, helix etc...