Material: aluminum Performance: Designed for GN125, GS125, EN125 models to support enhanced engine performance Design: Features a cylinder head speed line worm gear configuration that contributes to improved power delivery Durability: Tested to operate at temperatures up to 105℃ without evaporative losses Compatibility: Engineered to fit GN125, GS125, EN125 speedometer drive systems and integrates with existing components Installation: Simple installation process that does not require specialized tools The RESV Tachometer Driven Gear Assy.is built to support within the speed line system of compatible motorcycles.Constructed from aluminum , it maintains structural integrity under elevated operating conditions.The integrated worm gear design aligns with the cylinder head speed mechanism, supporting accurate speed transmission and consistent performance.Its compact profile minimal impact on engine aesthetics and handling characteristics.Suitable for riders seeking a functional upgrade to their tachometer or speedometer drive assembly. : This part is made by an independent vendor.Any brand/model mention is for compatibility purposes only.