X-Flow is a tuning company in Grand Theft Auto: San Andreas. Wheel Arch Angels offers X-Flow brand exhausts, bodykits, roof scoops and spoilers, as well as an X-Flow-themed paint job for the Sultan and possibly the Jester. This Jester paint job is seen on a model car box in Zero RC for the "Jester Crossflow", and with "cross" and "X" meaning the same, it could be read as "X-Flow".

X-Flow's parts are slightly cheaper than the Alien Styling counterparts, and feature more practical and simpler racing-style designs, as opposed to Alien's tuner-like styling.