Hybrids are increasingly becoming the car of choice in Japan and as a result the country that’s responsible for popularizing electrified motoring is also the Mecca for hybrid tuning.

Yes, some performance shops are working on adding more power to hybrid systems, but as with the rest of the auto industry, the majority of tuning is dedicated areas outside the engine bay. And with the Prius being the best selling car in Japan, it’s the one that gets the most attention.

Built by Toyota‘s motorsports partner Gazoo Racing, the Prius G Sports Concept is a look at a future sports package that the company is considering. Debuting at the Tokyo Auto Salon, the modifications are minimal and look to consist of a set of 18-inch wheels to improve handling and an aero kit.

Toyota won’t say for sure, but look for this kit or perhaps a full production model based on this car to launch in Japan in the coming months.

GALLERY: Toyota Prius G Sports Concept

It’s not even for sale in North America yet, but over in Japan they’re already hard at work modifying the all-new Toyota Vitz – sold here as the Yaris.

A marked improvement on the current model in the style department, the G Sports team at Gazoo Racing have customized this little hatch with a selection of accessories including a complete aero kit. Of note is an aggressive race-inspired rear diffuser, as well as a subtle roof spoiler. As expected, there’s a lowered suspension, plus a set of 18-inch light weight wheels for this sub-compact.

Toyota isn’t one for building driver’s cars, but the G Sports line is helping give enthusiasts a reason to buy Toyota products – or at least they are in Japan. However, as it stands, this package is still just a concept.

GALLERY: G Sports Concept Vitz

How much could possibly be reported out of Toyota’s Tokyo Auto Salon booth? With G Sports and Gazoo Racing sharing the real estate it’s no surprise there’s plenty to see. Along with the FT-86 G-Sports Concept, Toyota displayed a pair of Gazoo Racing cars: the iQ-based FR Hot Hatch with a widebody and stylish flat black accents as well as a track-ready MR-S roadster. Toyota’s MR-S never got the cult following that its predecessor the MR2, but it was nice to see a tuned MR-S nonetheless.

Two additional concepts from G Sports were also present in the booth with the Mark X (aka, Lexus GS) being converted from a mundane commuter sedan to an aggressive street prowler while the G Sports Prius Concept took the car’s aerodynamics to the extreme, covering up the rear wheels in order to reduce drag as much as possible.

GALLERY: G Sports Prius Concept

GALLERY: G Sports Mark X Concept

GALLERY: Gazo Racing FR Hot Hatch and MR-S