Remove stock magnets in G310 / G311 rotor and rebond them with high temperature thermal cured epoxy for use in higher RPMs. The stock Bafang motors are at risk of magnets coming loose when used above 350 rpm, especially when the motor is hot. After removing and regluing the magnets the motor can support operation up to 550 rpm.
This upgrade is important for those wanting to use these small motors in fast but low power ebike applications. It is not required for most 36V systems