The Yokomo BB-126N-4 6x12 bearings are a narrow heavy-duty four-piece set produced for ZM-415SH applications. These bearings fit narrow hub bores and are listed as replacement units for the specified model, intended solely for RC wheel and drivetrain use.
Compatibility is limited to ZM-415SH as stated; do not assume interchangeability with other hubs without confirming dimensions. When fitting new bearings, check the hub bore and bearing direction, seat each bearing evenly, and replace the complete set to maintain even wheel spin and predictable handling.
As a setup consideration, installing a heavy-duty narrow bearing set enhances load capacity and service life at wheel or gearbox contact points; ensure you check for clearance to surrounding parts before completing the build.
Copyright © 2008-2026 rcjaz.co.uk All rights reserved