No Ultimate+ parts

[iGearhead]

Hey so I cant seem to access my final two Ultimate+ parts. I have done the High Heat events many times, I've unlocked Exhaust Ultimate + and ECU Ultimate+ but when I return to the garage they're still locked. Please help. 

[jetair25]

I think you have to press R1 to access your inventory when your in performance parts, and that's where you'll find the parts that you have unlocked. Don't quote me on this though

[NemixDev]

@iGearhead What level are you ? Because i had the same issue, as soon i hit level 50 i unlocked the rest, i think you cant unlock everything if you are not level 50 it will give you same parts all the time, and they will just go to your inventory.