Installing a roof rack on a Subaru WRX is a bolt-on process using the vehicle’s factory fixed points — no drilling needed on models that have them.
The process for how to install a roof rack on a Subaru WRX starts with one question: does your car have factory fixed points? Most 2018 and newer models do, making the install a straightforward bolt-on job. Older WRXs and certain trims may lack these points, requiring a kit designed for your specific year and roof type.
Does Your WRX Have Factory Mounting Points?
Pop open the plastic roof-rail covers running along the roof channels. If you see threaded holes underneath, you have factory fixed points ready for a no-drill rack install. On many 2017 and newer WRX trims those holes are present, but the 2017 model year is inconsistent — some have them, some don’t, so checking before you buy a rack saves a return trip.
A sunroof doesn’t automatically block a roof rack. On many WRXs the factory mounting points sit far enough forward that the sunroof still operates normally. Confirm fitment against your exact rack and vehicle before committing.
Installing a Roof Rack on a Subaru WRX: Matching Hardware to Your Roof
With the factory fixed points confirmed, the install follows a consistent sequence. Lay out all parts from the kit and verify everything is present. Open the roof-rail covers, then align each bracket with the threaded holes. Insert the bolts and snug them by hand — leave all hardware loose until the rack is centered front to back and side to side. Tightening too early locks the rack in the wrong position.
Once alignment is correct, torque the bolts. Reinstall the roof-rail covers, then give each mount a firm shake to confirm the rack is locked in place.
| Component | Specification | Note |
|---|---|---|
| Mounting bolts | M6 × 11 mm or M6 × 40 mm | Length depends on roof thickness; use supplied hardware |
| Wrench size | M6 or M4, per kit | Check your instruction sheet before starting |
| Torque spec (OEM bars) | 60–75 in-lbs (~5 ft-lbs) | Exact spec in your kit’s manual takes priority |
| Fixed-point fitment (2018 example) | Thule THKIT3131 + TH7602B/TH7603B | Reference for aftermarket compatibility checks |
Choosing the right rack for your WRX matters as much as the install. Check our roundup of the best WRX roof rack options for tested recommendations that fit your model year.
What Are the Most Common Installation Mistakes?
The most frequent error is tightening everything before the rack is centered — once torqued, the brackets won’t slide for adjustment. Another is assuming every WRX trim has the same mounting points, especially on the 2017 model year. Skip the final shake test and a loose rack can go unnoticed until you load cargo. For bare-roof installs that require drilling, failing to follow the supplied template and sealant instructions risks roof leaks that are expensive to fix.
FAQs
Can I install a roof rack on a WRX with a sunroof?
Yes, on most models. The factory fixed points on many WRXs are positioned far enough forward that the sunroof can open and close without hitting the rack mounts. Double-check fitment against your specific rack and vehicle before purchasing.
What tools do I need to install the rack?
You’ll need a wrench that fits the supplied bolts — typically M6 or M4 depending on the kit — and a torque wrench that reads inch-pounds.
How do I check if my WRX has factory mounting points?
Pry open the plastic roof-rail covers along the roof channel. If you see threaded holes underneath, your WRX has factory fixed points ready for a bolt-on rack. If there are no holes, you’ll need an aftermarket kit for your specific year and trim.
References & Sources
- Rough Country. “Roof Rack Installation Instructions.” Details bolt torque, hardware sizes, and the full installation sequence for vehicle roof racks.