A suspension for supporting a longitudinally extending vehicle frame rail above an axle, comprising: a first frame attachment portion adapted for connection to a vehicle frame rail; a first spring module attached to the first frame attachment portion; said first spring module having an opening defined by a top wall, a bottom wall, and first and second side walls (80, 82) of said first spring module; a first spring mount positioned within the opening of the first spring module; a first shear spring positioned between a first side wall of the first spring mount and said first side wall of the opening of the first spring module; a second shear spring positioned between a second side wall of the first spring mount and said second side wall of the opening of the first spring module; characterized in that said first spring mount comprises an inboard part and an outboard part separate from the inboard part, a first through-hole positioned in at least one of the inboard or outboard parts (140, 142) of the first spring mount adapted to allow passage of a first connecting rod therethrough, wherein the first connecting rod connects the inboard part of the first spring mount together with the outboard part of the first spring mount, and wherein the first shear spring is compressed between the first side wall of the first spring mount and the first side wall of the opening of the first spring module through a wedging action between a tapered surface of the first shear spring and the first side wall of the first spring mount, and wherein the second shear spring is compressed between the second side wall of the first spring mount and the second side wall of the opening of the first spring module through a wedging action between a tapered surface of the second shear spring and the second side wall of the first spring mount and further including a second through-hole positioned in at least one of the inboard or outboard parts (140, 142) of the first spring mount adapted to allow passage of a second connecting rod therethrough, wherein the second connecting rod also connects the inboard part of the first spring mount together with the outboard part of the first spring mount. a first frame attachment portion adapted for connection to a vehicle frame rail; a first spring module attached to the first frame attachment portion; said first spring module having an opening defined by a top wall, a bottom wall, and first and second side walls (80, 82) of said first spring module; a first spring mount positioned within the opening of the first spring module; a first shear spring positioned between a first side wall of the first spring mount and said first side wall of the opening of the first spring module; a second shear spring positioned between a second side wall of the first spring mount and said second side wall of the opening of the first spring module; characterized in that said first spring mount comprises an inboard part and an outboard part separate from the inboard part, a first through-hole positioned in at least one of the inboard or outboard parts (140, 142) of the first spring mount adapted to allow passage of a first connecting rod therethrough, wherein the first connecting rod connects the inboard part of the first spring mount together with the outboard part of the first spring mount, and wherein the first shear spring is compressed between the first side wall of the first spring mount and the first side wall of the opening of the first spring module through a wedging action between a tapered surface of the first shear spring and the first side wall of the first spring mount, and wherein the second shear spring is compressed between the second side wall of the first spring mount and the second side wall of the opening of the first spring module through a wedging action between a tapered surface of the second shear spring and the second side wall of the first spring mount and further including a second through-hole positioned in at least one of the inboard or outboard parts (140, 142) of the first spring mount adapted to allow passage of a second connecting rod therethrough, wherein the second connecting rod also connects the inboard part of the first spring mount together with the outboard part of the first spring mount.