The SL-AIR is our most recent innovation. The air-sprung variation of the SL-independent suspension. As a result, the SL-AIR offers the same advantages, namely 12-tonne axle load exemption, a Super Low load floor and a 50% larger steering angle than with conventional self-tracking trailers. Can optionally be supplied with hydraulic steering. Maximum payload capacity with minimum bed height: SL-AIR!