SQlab 521 Bedienungsanleitung Seite 22

Category 2 according to DIN EN 17406
Refers to bicycles and EPACs to which condition 1 applies and which are also used on unpaved roads and gravel
paths with moderate uphill and downhill gradients. Under these conditions, contact with uneven terrain and
repeated loss of tire contact with the ground may occur. Drops are limited to 15 cm or less.
Average speed in km/h
Maximum drop/jump height in cm
Intended Use
Bike type
Category 2 according to ASTM F2043-13
Bicycles/add­on components in this category may, in addition to the conditions of use referred to in category
1, also be used on gravel and unpaved roads of a moderate grade. In this category, there may be a short­term
loss of tyre ground contact in harsher terrain. Jumps (drops) from a height up to max. 15 cm can take place.
Category 4 according to DIN EN 17406
Refers to bicycles and EPACs to which conditions 1, 2 and 3 apply and which are used for descents on unpaved
roads at speeds of less than 40 km/h. Jumps shall be less than 120 cm.
Average speed in km/h
Maximum drop/jump height in cm
Intended use
Bike type
Recommended riding skills
Category 4 according to ASTM F2043-13
Bicycles/add­on parts in this category may, in addition to the operating conditions listed in categories 1, 2 and
3, also be used for downhill runs in rough terrain up to a speed of max. 40 km/h
Jumps and drops can take place up to a height of max. 122 cm.
Category 6 according to DIN EN 17406
Refers to bicycles and EPACs to which condition 1 applies and which are used in competitions or for other
occasions at high speeds of more than 50 km/h, for example descents and sprints.
Average speed in km/h
Maximum drop/jump height in cm
Intended use
Bike type
Recommended riding skills
15 ­ 25
< 15
Recreational Riding & Trekking
Trekking & Travel bikes
irrelevant
< 120
Sport & competition riding (high technical demand).
Mountainbikes & Trailbikes
technical skills, practice & good bike control
30 ­ 55
< 15
Sport and competition rides with high effort
Road bikes, time trial bikes and triathlon bikes.
technical skills and practice required