The 3RACING BS-415/V1 kit supplies bearings sized for the Tamiya TRF 415 mounting points, aimed at lowering drivetrain friction and improving mechanical efficiency. Correct bearing selection reduces parasitic losses across gears and shafts.
Upgrading to ball bearings cuts rolling resistance and improves torque transfer consistency. That helps reduce drivetrain hysteresis and supports more predictable handling through acceleration and braking phases.
Bearings should be pressed squarely on the outer race and checked for axial play. Confirm shaft runout and coupling alignment after fitting to avoid preload or binding that would negate performance gains.
3RACING parts are designed to offer measurable setup improvements without extensive chassis modification. The BS-415/V1 set integrates into typical TRF 415 tuning workflows as a cost effective friction reduction upgrade.