Super Taikyu GR Yaris

Brief overview
Boosted up to 235kw using ECU tuning
ORC heavy duty clutch
Coilovers using KYB shocks
GR LSD
ADVICS 6-pot calipers + 2-piece slit rotors on the front and ADVICS calipers + 2-piece plain rotors of the same size as the genuine ones on the rear
Possibility that aero parts will be commercialized

From the article - it’s an OEM vehicle driven by the Toyota President who is the father of the GR:

The evolution of GR Yaris has already begun!

The Super Taikyu Race (S-Taikyu) is said to be the "racing car closest to the tuning car" because it runs long distances with vehicles that are as close to commercial cars as possible.


The GR Yaris of "Rookie Racing" driven by Toyota President Akio Toyoda and Masahiro Sasaki suddenly made a pole-to-win in the 24 hours of Fuji's debut in the Super Taikyu Series.It is a state-of-the-art manufacturer-based tuning machine filled with Toyota (GR)'s enthusiasm to "train the car in actual battles and feed it back to commercial vehicles.

The engine body and accessories are equal to normal.However, the ECU program has been modified, and the maximum output has reached about 320ps due to boost-up.Of course, various limiters have also been raised.For the clutch, set a reinforced product made by ORC.

The exhaust muffler is a barnacle special, equipped with a catalyzer at the tail end.This is a regulation-compliant specification.

The suspension is built around KYB's racing shock. The spring to be combined is made of hull. By the way, the GR Yaris rear suspension has a structure in which the damper and spring are separated, but in race cars it has been changed to a general coil over in order to widen the setting range. The LSD uses a commercial model sold in the GR garage.

Considering compatibility with slick tires, the brakes are equipped with ADVICS 6-pot calipers + 2-piece slit rotors on the front and ADVICS calipers + 2-piece plain rotors of the same size as the genuine ones on the rear.

Originally, GR Yaris is said to have high body rigidity as a commercial car, but the burden on the body is greater than expected on the stage of S-Tai, which runs on the circuit with slick tires. Therefore, in the roll cage that covers the room, all the stress concentration parts are connected by bars to increase the rigidity.

For the fuel tank, a special model is manufactured and installed under the floor. It is said that the fuel is designed to contribute to lowering the center of gravity.

There are two major differences in the exterior from commercial vehicles. Since aerodynamics is also an important factor in racing speed, a swan neck mount wing is attached to the rear. And the front bumper is designed with two-stage rectifying fins after removing unnecessary openings on both sides.

These are aero parts that have been certified according to the regulations, but they are currently under development. However, there is a good chance that it will be commercialized exclusively for GR in the future

.I heard that it was a 4WD with a 1600cc turbo, so I honestly didn't expect it. However, when I got on it, the pickup was good and there was torque. The body was light and the engine was small, so the balance was excellent. In a good way, it was betrayed. "It was," said Masahiro Sasaki.

For owners who are GR Yaris owners and want to enjoy tuning, this S-Taikyu spec is a cutting-edge tune that attracts attention.