This alloy spur gear adaptor is a direct replacement intended for use on HPI Baja platforms. It sits between the spur gear and the gearbox or motor mount, supplying a consistent mounting face and keeping the drive train aligned.
Focus on correct seating and axial alignment during fitting: make sure the adaptor sits flush on the spur hub, secure it with the original fastening method, and recheck mesh and backlash after installation. The part is supplied as a single pcs unit to replace worn or damaged adaptors without changing existing motor or spur gear specifications.
Install this adaptor to restore correct spur mounting and preserve drivetrain geometry on HPI Baja buggies.
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