If you are looking for a specific part (a "piece") for your board, these are the most common modules that can be replaced or upgraded:
The "brain" that manages speed and braking. Hub Motors: The motors built directly into the rear wheels. wowgo-v2
The plastic "pieces" or cases that hold the battery and ESC under the deck. If you are looking for a specific part
You can find a wide variety of WowGo Parts & Accessories directly from the manufacturer to fix or maintain your board. wowgo-v2
Riders often discuss "pieces" of the V2 in the context of repairs: