If this query is referring to a hyper-specific online forum topic, or a video game mod archive labeled 21408.rar , could you provide it came from? This will allow for a more specific set of instructions! How to split rar files into parts

If you have downloaded a multi-part RAR file (like 21408.part1.rar , 21408.part2.rar ) and want to extract the files inside, follow these rules:

Click . WinRAR will automatically slice your data into exact pieces of that size, with the leftover data in the final piece. 📂 Extracting a Piece of a RAR File

Look for the dropdown field at the bottom left.

All numbered pieces of the file must be placed in the exact same folder on your computer.