coopernicus
Platinum Level Site Supporter
Hello Jiikoo811, I only rode the new 2014 250cc as the 300cc was a 2013. The 2013 300cc was similar to 2011 300cc I have ridden. Absolutely no difference in vibrations for the 2013 300cc. The 2014 250 I rode seemed to be a little better than other 250s I have had a chance to ride with respect to vibrations. This is true with both the Keihin and billet SmartCarb and the addition of a welded on flywheel weight (balanced). I also noted a small difference in engine sound but that may have been due to the new FMF Gnarly expansion chamber and new style FMF Q silencer. Please note that this appears to be an early production 2014 so later production models may have refinement.
Eric
Eric