What gear oil to use for 100 Ci rev-tech?

For a 100 Ci Rev-Tech engine, it is generally recommended to use a high-quality 20W-50 motorcycle gear oil specifically designed for V-twin engines. Look for oil that meets or exceeds API SL or JASO MA standards for optimal performance and protection. Always refer to the owner's manual for the manufacturer's specific recommendations and requirements regarding oil type and viscosity.