S1

In 2021 SCX continued the trend from the previous year and released two new versions of the Audi S1 World Rally Cross. This model, reference U10388S300, comes with rear-wheel drive, front and rear LED lights, a slot car guide with an automatic double-braid return system, and a single driver figure. The car, in dark colors (red/gray/black), carries the #4, Blackläder livery, and the Larsson name on the rear windows. SCX drew inspiration from the real car that raced in the 2020 Sweden RallyCross.

The Audi S1 WRX was a rallycross car developed by Audi Sport for the FIA World Rallycross Championship between 2014 and 2019. It was fitted with a turbo engine of around 600 hp, quattro all-wheel drive, and could accelerate from 0 to 100 km/h in under two seconds. After Audi's official withdrawal, it continued competing with private teams. In 2020 Robin Larsson competed with an Audi S1 in the FIA World Rallycross Championship under the colors of the JC Raceteknik team. The model reproduced by SCX under reference U10388S300 corresponds to the one he used that year at the Swecon World RX of Sweden, held at Höljesbanan. Larsson raced in the first semifinal but finished fourth and did not qualify for the final round.