For axle loads below 6t, above 10t or for special applications such as long-travel configurations for mega-trailers and off-road work: with SL air suspension, you're banking on proven BPW technology - and on an air suspensions system which offers long service life and safety. And, if your trailer should ever find itself in the workshop, you can be sure that it will be a short visit thanks to the high level of availability of spare parts.