Big Bore 105cc Cylinder Kit Yamaha YZ85 2019-2023

All the cylinders are entirely engineered in Italy by Athena’s R&D Department which has a strong internal know-how and cutting-edge tools to design and test each piece. They are coated with motor-nicksil, a nickel-silicon coating developed by Athena to obtain smoothness and optimal wear resistance. Athena’s cylinder kits and its components are recognized worldwide for their performance, durability and reliability. Athena’s Big Bore Cylinder Kits guarantees an increase in performance that can be observed along the power curve, keeping the reliability at the same level of the original components. All the components of the kit have been developed to withstand the highest temperatures, pressures and stresses and have been validated by Athena technicians with severe bench and road tests. The kit includes the high-quality aluminum cylinder with increased bore and galvanic coating, barrel designed with 5 exhaust ports, cylinder head with interchangeable central dome, flat-top cast piston with two rings, special Ergal valve with nickel treatment, and all the necessary gaskets. 14.8:1 Fitment: Yamaha YZ85 2019-2023

• Fits: Yamaha YZ85 2019-2023
• Includes: Cylinder, Piston Kit, Gasket Kit, Exhaust Valve, Cylinder Head, Head Insert
• Chosen by the top race teams in all forms of racing including super cross, motocross, GNCC, superbike, and more
• Constructed from aluminum, the cylinder is lined with a nickel-carbide coating for durable, reliable performance
• Built from race proven designs