mechanical trailer suspension devide into american mechanical suspension and germany mechanical suspension. those mechanical suspension also suitable for truch, semi trailers. Suspension, Germany Mechanical Suspension with following data: ItemA1 unladen A1 laden Optional spring Axle Load(KG) GS12002 464434100*12*10nons 12000*2GS12003 464434100*12*10nons 12000*3GS14002 490460100*12*12nons 14000*2GS14003 490460100*12*12nons 14000*3GS16002 470440100*12*14nons 16000*2GS16003 470440100*12*14nons 16000*3 *OPTIONAL ROUND AXLE *OPTIONAL WHEEL BASE *OPTIONAL OTHER SPRING MODEL