This Delrin 46-tooth main gear is a precision aftermarket replacement for Kyosho Inferno MP7.5 applications where predictable wear and consistent mesh are required. The component is supplied as 1 pcs and is dimensioned to fit the original gearbox layout without modification.
Installation is performed by replacing the spur assembly inside the gearbox; technicians should set correct mesh and backlash during refit and manually rotate the drivetrain to verify smooth engagement prior to powering. In workshop settings this gear is used to stabilise drivetrain behaviour during pinion swaps and spur position adjustments.