Only use DT Swiss products within their intended category (or lower). Otherwise the user shall assume full responsibility.
ASTM classification
The intended use of DT Swiss products is classified in five categories from riding on paved roads to downhill and freeride riding.
Category 1
represents the use of DT Swiss components on mainly paved surfaces. The ground contact of the tires can be lost unintentionally for a short time.
Category 2
represents the use of DT Swiss components under the conditions of category 1 as well as on mostly paved and partly unpaved surfaces with a slight gradient. The tires may briefly lose contact with the ground when riding over drops up to 15 cm high.
Category 3
represents the use of DT Swiss components under the conditions of categories 1 and 2 as well as on paved and rough, unpaved surfaces by riders with advanced riding skills. The tires may lose contact with the ground. Occasional drops / jumps of approx. 60 cm height are permitted. Due to the light design of the components, this application can also cause damage to the material in case of riding errors, which can also lead to injuries to the rider.
Category 4
represents the use of DT Swiss components under the conditions of categories 1, 2 and 3 as well as in very rough, blocked terrain with jumps / drops up to approx. 120 cm height and speeds up to 40 km/h by riders with very good riding skills. DT Swiss components in this category must be checked for possible damage after each ride due to the high loads. A shortened product life time cannot be excluded.
Category 5
represents the use of DT Swiss components under the conditions of categories 1, 2, 3 and 4 as well as in extremely steep and rough terrain with very large jumps / drops and speeds over 40 km/h by riders with exceptionally good riding skills. DT Swiss components in this category may also be used in bike parks and on downhill tracks. DT Swiss components in this category must be checked for possible damage after each ride due to the very high loads, since previously caused damages can lead to failure of the component even at significantly lower loads during subsequent usage. The product life time can be shortened by this extreme use.
