Kyosho Mini Inferno 47mm Graphite Main Shaft GMIF1237 by GPM  [GMIF1237]

Precision graphite main shaft technical overview

This aftermarket main shaft from GPM is engineered for Kyosho Mini Inferno applications and is supplied as a single pair (1pr). The component pairs a CNC-friendly graphite centre section with machined alloy end fittings to hold concentricity where the shaft interfaces with gearbox bearings and driven elements. The 47mm sealed length corresponds to the Mini Inferno drivetrain assembly specification.

Fitment guidance: intended for Kyosho Mini Inferno variants. Confirm the installed shaft sealed length and the exact profile of end fittings on the vehicle prior to installation, as correct interface geometry is required for reliable operation. This product is for scale RC use.

Installation procedure: remove the gearbox rear cover and extract the existing main shaft per the vehicle service manual, then install the GMIF1237 unit ensuring alloy ends fully seat in the gearbox supports without preload. Inspect bearing play and seal integrity and replace any worn items to maintain service life of the new shaft. Proper lubrication and correct bearing tolerance are important for optimal results.

Upgrade rationale: the graphite centre reduces mass at key radii while alloy ends maintain hub concentricity, which can lower rotational play under load and improve drivetrain responsiveness when compared to worn stock components. Use as a service replacement or as part of a measured hop-up programme focused on drivetrain precision.