One of the things that has changed in the new 2015 Yamaha Supercharger assembly is the clutch shaft. The 2015 model is cold pressed unlike the 2014 model which incorporates a lock nut. Until now we do not know if it was Yamaha who changed the design of this part or HKS who makes the Supercharger. The picture shows clearly that the shaft went off alignment after 1.6 hours of operation of this brand new FZR. Photo courtesy: Tony Antonio from Philippines.
