Yamaha FZ6 S2 600 NHG 5S51 2007. Yamaha FZ6 S2 600 NHG 5S53 2008. Yamaha FZ6 S2 600 NHG 5S55 2009. Yamaha FZ6 S2 600 NHG 5S55 2010. Smooth running is enhanced by special oils, greases or coatings. For the trains is usually a high-quality silicone oil used to reduce the hand forces.