This bearing set is a direct aftermarket bearing kit intended for RC-scale TRX4M platforms, supplied by GPM under the TRX4MBEARING part code. It replaces the wheelbox, axle and drivetrain bearings on the listed 1/18 TRX4M models with sealed steel bearings to reduce internal friction and help keep contaminants out during trail and crawler use.
The package contains multiple sizes to match the original bearing locations, allowing a one-pass replacement when servicing or upgrading the model. Because these are sealed steel bearings, they are intended to offer straightforward swap-in replacement and lower routine maintenance compared with open bearings, while retaining the stock fit dimensions for the listed models.
If you service or refresh bearings on a listed TRX4M 1/18 model, this sealed steel set provides matched sizes for a full replacement and helps maintain drivetrain smoothness under trail and crawler conditions.
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