Your Scion xB's performance can be greatly improved through the use of aftermarket engine parts. This is because many engine parts on stock Scion xBs are not designed with the maximum performance in mind. By upgrading your Scion xB's engine parts, you'll notice a big difference in acceleration and engine sound.
Narrow Down Your Scion xB Year
The links below will drop you in to the same category for a different Scion
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