Works'91 TeamSpec Center Pulley Retainer for YZ-W91TS / YZ-W91 - Yokomo YZ-630W3  [YZ-630W3]

Product Details and Fitment

The YZ-630W3 is an aluminium stopper designed to secure the center pulley on Works'91 TeamSpec chassis, provided by Yokomo as a dedicated replacement for affected center pulley assemblies. This item is intended for hobby remote-controlled chassis use only.

Fitment is restricted to the Works'91 TeamSpec platforms identified by the manufacturer, ensuring it matches the centre pulley mounting points on supported YZ series frames. Its role is to maintain pulley location under belt tension and throughout suspension movement, which aids belt alignment during driving.

For installation: remove the original stopper from the center pulley assembly, install the YZ-630W3 in the same position, then verify pulley rotation and belt alignment before use. Check for play and re-tighten fasteners to the torque values recommended by the chassis maker.

Note on setup: this stopper is a reliability and maintenance part rather than a performance upgrade; its main contribution is consistent pulley placement which supports repeatable belt tension and drivetrain behavior.