One of the best performance modification to get your Honda Grom 125 / MSX125 to have quicker throttle response or to rev quicker, it's best to reduce the rotational weight on the crankshaft. Lightening the flywheel will allow just that! But before you do, you'll need to remove it! This tool allows you to easily remove the flywheel in a breeze. Great for repairs and engine builds as well!