This accessory modifies the BD5 centre one-way main gear adapter into a direct main gear adapter by removing the one-way mechanism, establishing a direct-drive link in the centre drivetrain assembly. It is an RC-scale replacement aimed at on-road models where a fixed main gear is part of the desired tuning approach.
The adapter kit includes the axle pin required for installation. Converting to a direct main gear removes the one-way freewheeling action, changing power transfer characteristics during coasting and when reverse loads are applied. Use this option to influence traction and handling through driveline setup choices rather than suspension changes.
Fitment guidance: confirm centre assembly clearances, verify the main gear meshes correctly with the spur and pinion, and secure retaining hardware to the chassis recommended torque. This component changes drivetrain operation at the model scale and is intended for hobby RC applications only.
Fits the BD5 drive system centre assembly as a direct main gear adapter replacement, designed for Yokomo BD5 on-road drivetrain layouts.
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