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This high quality aluminum patented-design gear jammer tool from Motion Pro allows you to lock gears in place to make installing and removing gears a breeze. And if you've got to tighten those lock nuts to proper torque setting, this will help get the job done. It was initially designed for the Honda CRF450 Primary Gear, but works on almost any motor. The powerful magnet on the underside holds it securely in place, and it comes with an attached cord for easy access and storage.
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