There's some terrible advice on this thread. If you guys don't like Toyota Corollas, why are you here.. to troll?
Regardless, I am a 2018 XSE corolla owner myself with all available TRD parts installed.
Did you know the 2018 Corolla is identical to the 2017 XSE Corolla? The only difference is in 2018 model they added a light on under the driver and passenger visor. Everything else is identical. No change to the body of the car.
That said, all the 11th gen corollas (2014 - 2018, all trims including XSE!) have the same dimensions, so any TRD part for this gen corolla will fit.
-TRD Rear Sway Bar
-TRD Performance Exhaust
-TRD Performance intake filter
-TRD lowering springs.
-TRD tower bar (this is actually for 2014 scion IM but fits perfectly.)
-TRD oil filter
And by the way, once these are added, it no longer feels like a Corolla, you can go 120 mph without the car wobbling one bit. You can take corners at 80 mph without the car feeling unstable. Also check out the pedal commander, it removed the input lag when you press down on the gas, the result is fast acceleration. I trigger alot of Hondas when they lose me to me in a race. People forget Corolla's are very light, and very agile, though of course it's not intended as a racecar, it's nice to have the option to make it a very fun car to drive. By the way, I trigger alot of Honda and Hyundai drivers on the road when they lose me in a race.