Kyosho Inferno MP7.5 Front Gearbox Upper Arm Bulk Alloy (Caster 2deg Toe-in +2deg) MP7509A by GPM  [MP7509A]

Upper arm bulk summary

This alloy upper arm bulk is a direct replacement for the Kyosho Inferno MP7.5 front gearbox assembly. It secures the upper arm pivot and sets a fixed 2deg caster with a +2deg toe-in to match MP7.5 chassis geometry.

Fitting uses the existing gearbox and upper arm tower mounting points on MP7.5 models. Install with the original hex fasteners, maintain correct thread engagement, avoid over-tightening to protect the plastic housings, and verify alignment once tightened to confirm caster and toe settings.

Use this bulk when you need a dependable geometry reference during setup changes like arm swaps, shock repositioning, or roll centre tweaks. It is a practical replacement when the factory bulk is worn or damaged on the MP7.5.