Mugen MTX-5 Bearing Retainer Upgrade Spring Steel - AM-MTX-T2707 by Arrowmax  [AM-MTX-T2707]

Bearing Stopper for MTX-5 Drivetrain

The Arrowmax AM-MTX-T2707 is a spring steel thrust bearing stopper made as an aftermarket spare for Mugen MTX-5 drivetrains, engineered to keep axial thrust bearings in place while you tune or maintain the gearbox. It acts as a compact mechanical retainer to protect bearing alignment under changing mesh or preload conditions.

Installation is straightforward: partially strip the gearbox or differential to reach the bearing seat, slide the stopper into position, then refit the housing with the original screws. No special fixtures are required; common hex keys and hand tools suffice. The spring steel shape gives a small retention force so the bearing stays seated but can be removed easily for replacement.

Use this stopper when adjusting gear mesh, swapping bearings, or replacing motor and gearbox parts to reduce bearing movement. Inspect it during routine checks and whenever you change bearing sizes or types.