This badge was found on the special Japan-only 2018 WRX STI RA-R, which was released to coincide with the 30th anniversary of Subaru Tecnica International, or STI.
The round badge is 60mm, or a little over 2 1/4", in diameter. Peel-and-stick installation. (For best results, clean and degrease surface before installation, and work inside with an ambient temperature of at least 60 F.)
Imported by us from Japan.