The 3Racing Sakura M4 Pro M5x 21.4 Main Pulley Shaft is built to deliver consistent alignment and reduced friction in the drivetrain. Its accurate dimensions provide a secure fit that helps keep the pulley running true under load.
Designed to match Sakura M4 Pro geometry, the M5x 21.4 shaft simplifies installation and promotes steadier torque transfer. Hobbyists looking to improve throttle modulation and drivetrain feel will find this a useful upgrade.
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