FOCUS R.A.T. in the context of a rear bicycle wheel with a through axle measuring 12x155.7 mm. R.A.T. is an innovative through-axle system used in bicycles to provide stability, rigidity and ease in the area of wheel changing.

The main features are:

1. Stability and Stiffness: This system is designed to provide stability and stiffness, which is important for efficient bicycle riding, especially in difficult off-road conditions.

2. Speed of Wheel Replacement: R.A.T. is considered the most efficient wheel replacement system on the market. Its speed and ease of use make it an attractive solution for cyclists, especially when changing wheels during competition or training.

3. Reliability: Thanks to the unique features of R.A.T., even reputable bicycle manufacturers choose to use this system on their disc models, which proves its reliability and effectiveness.

4. Popularity among Competitors: Information indicates that competing bicycle manufacturers have also begun to rely on R.A.T. in their disc models, which may be evidence of the popularity and confidence in this technology in the bicycle industry.

In summary, R.A.T. is an advanced through-axle system that offers cyclists stability, stiffness and, above all, speed when changing wheels. It's an innovative solution that has gained recognition in the cycling community.