Seller notes

Send us YOUR CORE and we will upgrade it to 400 AMPS and return it to you within one week. Free return shipping. 1 year limited warranty.**Shipping address is automatic send to you EBay messages, we don't send shipping labels, we take care of the shipping back to you.**Is the controller is bad will be fixed and upgrade, not extra charges...***THIS UPGRADE IS NOT FOR MORE SPEED OR TORQUE***IS FOR : Don't burn up your controller! Upgrade to a 400A controller to handle higher current during demandi...

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