One of the issues that has almost always plaqued CFMs is regardless whether they use a dual-rate single spring or separate springs in a dual rate setup, the lighter section always either tends to collapse and fail with heavy use or coil-binds well before the main spring starts to move. In this video the rear springs are a prime example. What you want is for the main spring to start movement before the lighter one coil binds or reaches its bottom...a smoother "transition" if you will...which the new springs do make happen. From experience, nothing improves the ride of a CFM machine like a new set of Elkas or Bandits but..coming in a solid second is a spring replacement. Although I have a set of Bandit shocks on front, I still have their replacement springs on the stock rear shocks and still love the ride improvement. So, yeah, this is definitely an improvement and worth looking into. JMO