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China Semi Trailer 28t Inside Gearbox Landing Gear/Trailer .Sup9a Sup11A 51crva4 Flat Bar Spring Steel for Leaf Spring US $600-800 / Ton.Z Type Air Linker for Semi Trailer Air Suspension US $40-60 / Piece.High Quality 13t 16t Best Price Semi Trailer Axles for Sale US $450-490 / Piece.sp.inforesults for this questionWhat is leaf spring suspension?What is leaf spring suspension?A leaf spring trailer suspension is inexpensive and easy to maintain.The two main types of light trailer suspension are leaf spring and torsion axle.A torsion axle uses a two-piece square axle with rubber cords inside.This allows the axle to twist inside of itself acting as a spring.Trailer Leaf Springs Trailer Springs