This component is the front centre drive shaft specified for the YZ-4S layout, supplied as a 66mm dogbone for builds that need the extended centre bone. It is intended for use on the RC YZ-4S chassis when adjusting the centre drive and slipper clutch configuration.
Installation guidance: the 66mm length offers clearance for slipper clutch assemblies while preserving the intended driveline geometry at the front centre. When fitting, check interaction with your outdrives and slipper parts to prevent binding and ensure smooth operation.
Tuning notes: moving to a 66mm dogbone changes driveline engagement and spacing and can affect throttle response; choose this length when slipper clutch setup or clearance demands the extra length, and verify bearing seating and axle alignment after installation.
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