The TMIF1237 is a 37mm titanium main shaft intended for Kyosho Mini Inferno transmission assemblies, supplied as 1 pr. It locates spur and pinion engagement and supports differential or gearbox components within the standard case layout.
Installation best practice: remove the transmission cover, extract the existing shaft along with its retaining clips and bearings, install the replacement shaft ensuring correct seating in the current bearings, and secure circlips or set screws to the chassis standard. Confirm smooth rotation and correct mesh before final assembly.
As an upgrade component, this titanium shaft provides increased stiffness and improved wear resistance compared with some stock materials, helping maintain consistent gear alignment under sustained use. Verify compatibility with your gearbox bearings and layout prior to fitting.