The best seat brackets for your WRX/STI, Crosstrek, or aftermarket bucket seats are vehicle-specific steel brackets that bolt straight into the factory seat mounting points — no drilling, no shimming, no guessing. Planted Technology brackets do exactly that: application-specific steel bases and side mounts that put your seat in the correct driving position with the stock floor hardware.
Planted Technology is a seat-mounting specialist: nearly the entire catalog is brackets, bases, and side mounts engineered for one specific chassis at a time. The Subaru coverage in this collection is deep — driver- and passenger-side bases for the 2015+ WRX/STI and 2013+ XV Crosstrek, plus bases for the 2002–2007 WRX/STI and 1998–2005 Impreza RS — along with Mazda RX-7 (1993–1995) applications. For universal fitment there are steel offset side-mount sets, which bolt an aftermarket bucket seat to a flat bracket for the correct height and recline angle.
The key advantage of application-specific brackets is geometry: the seat sits level, centered on the wheel, and low enough for helmet clearance without bottoming out on the floor. That matters on track, where seat position affects pedal feel, steering reach, and visibility over the dash.
Complete the cockpit with the right hardware: browse seats and harnesses, interior trim and accessories, and seats from Sparco, Corbeau, and NRG. Always confirm driver vs. passenger side and the stated year range before ordering.
Related: Planted Seat Bracket — WRX/STI 2015+, Crosstrek 2013+, Driver · Planted Steel Offset Seat Side Mount Set (Universal) · Interior overhaul: upgrading cockpit comfort
Are driver and passenger brackets interchangeable?
No. Planted sells them as separate driver-side and passenger-side applications, and the bolt patterns differ. Order the side that matches where you're installing the seat.
Do I need side mounts with a seat base?
Most aftermarket bucket seats need both: the vehicle-specific base bolts to the floor, and side mounts connect the seat shell to the base at the right height and angle. Check the seat manufacturer's mounting pattern before ordering.
Will the seat sit too high or too low?
Planted brackets are engineered to position the seat at a stock-like height for the application. If you're running a particularly tall or deep shell, the universal offset side mounts give you more adjustment range.
Do brackets affect airbag or seat-belt function?
Installing aftermarket seats can change how factory occupancy sensors and belts behave — check your year and model, and treat airbag-system changes as a job for a qualified installer.
