Mugen MTX-5 Spring Steel Thrust Stopper - AM-MTX-T2707 by Arrowmax  [AM-MTX-T2707]

MTX-5 Thrust Bearing Stopper

The Arrowmax AM-MTX-T2707 is a spring steel thrust stopper supplied as an aftermarket part for Mugen MTX-5 drivetrains, intended to secure axial thrust bearings during assembly and setup. Its simple retainer function maintains bearing position when gear lash or bearing preload changes during tuning.

Fitting typically involves short disassembly of the gearbox or diff case to reach the thrust bearing, inserting the stopper into the bearing seat, and refitting with the original fasteners. Use common hobby hex drivers and screwdrivers; no bespoke jigs are required. The spring-steel profile offers gentle retention while allowing straightforward removal for servicing.

For maintenance and tuning tasks this stopper reduces the chance of thrust bearings shifting when you alter gear mesh, replace bearings, or swap motor and gearbox components. Inspect the part whenever bearings are changed or during scheduled drivetrain checks.