After 30 years, Subaru is ending production of its boxer EJ20 boxer engine that debuted back in 1989 in the Japanese-spec Subaru Legacy. To commemorate the end of production, Subaru has unveiled the Subaru WRX STI EJ20 Final Edition, which also serves as a send-off for the current-generation WRX STI.

Subaru previewed the limited-edition WRX STI last month, and now it's debuted at the 2019 Tokyo Motor Show. As you have probably guessed by now, the Subaru WRX STI EJ20 Final Edition will only be sold in Japan. Production will be limited to 555 units, with eligible buyers being selected through a lottery in Japan.

Based on the Japanese Type S model, the Subaru WRX STI EJ20 Final Edition packs a turbocharged 2.0-liter EJ20 engine producing 304 horsepower and 311 lb-ft of torque, which is sent to all four wheels through a six-speed manual transmission. Further distinguishing the Final Edition are 19-inch BBS gold wheels housing Brembo brakes. With the EJ20 ceasing production, Subaru will no longer accept customer orders for the WRX STI in Japan from December 23. The Final Edition will cost ¥4,521,000, which is around $42,000.

While the WRX STI EJ20 Final Edition won't be available in America, Subaru will launch the limited-edition S209 in the US instead. Starting at a whopping $63,000, America's hardcore WRX STI has a 2.5-liter turbocharged boxer engine that produces 341 hp and 330 lb-ft of torque, sent to all four wheels through a six-speed transmission.

Having been on sale since 2014, the WRX sedan and WRX STI are due an update. According to a recent report by Japan's Best Car magazine, the next-generation WRX will arrive before the end of the year and will ride on the new Subaru Global Platform, resulting in improved rigidity, comfort and handling.

The engine will allegedly be downsized to a 1.8-liter turbocharged boxer unit producing around 270 hp paired with a CVT. The next-generation STI, on the other hand, is expected to pack a FA20 boxer-four engine with 315 hp mated to a six-speed manual transmission.