A bicycle suspension system for attaching a rear wheel with a rear wheel axle defining a rear wheel axis of rotation, to a front triangle, being the component of a bicycle, equipped with the suspension system, having a bottom bracket defining a bottom bracket axis of rotation, the bicycle having a right side being on the right hand side when the bicycle is viewed from the rear, the bicycle suspension system comprising: a rear triangle to which the rear wheel axle is mounted; a first link: pivotally connected to a front triangle at a first link front triangle pivot defining a first link front triangle pivot axis; and pivotally connected to the rear triangle at a first link rear triangle pivot defining a first link rear triangle pivot axis; a second link: pivotally connected to the front triangle at a second link front triangle pivot defining a second link front triangle pivot axis; and pivotally connected to the rear triangle at a second link rear triangle pivot defining a second link rear triangle pivot axis; and a shock absorber device directly or indirectly interconnected between two of the front triangle, rear triangle, first link and second link, for resiliently impeding relative movement of the suspension system from an unloaded at-rest position; wherein: the suspension system has a travel, being a range of movement of the rear wheel axle from the unloaded at-rest position to a full compression position; the rear triangle defines an instant centre; and characterized in that: with a bicycle equipped with the suspension system, resting on a horizontal surface, with the suspension system at 20% to 35% of total suspension travel from the unloaded at-rest position: the first link front triangle pivot axis and the second link front triangle pivot axis are no higher than a horizontal line passing through the instant centre; and a front triangle pivot line passing through the first link front triangle pivot axis and the second link front triangle pivot axis is substantially horizontal. a rear triangle to which the rear wheel axle is mounted; a first link: pivotally connected to a front triangle at a first link front triangle pivot defining a first link front triangle pivot axis; and pivotally connected to the rear triangle at a first link rear triangle pivot defining a first link rear triangle pivot axis; pivotally connected to a front triangle at a first link front triangle pivot defining a first link front triangle pivot axis; and pivotally connected to the rear triangle at a first link rear triangle pivot defining a first link rear triangle pivot axis; a second link: pivotally connected to the front triangle at a second link front triangle pivot defining a second link front triangle pivot axis; and pivotally connected to the rear triangle at a second link rear triangle pivot defining a second link rear triangle pivot axis; and pivotally connected to the front triangle at a second link front triangle pivot defining a second link front triangle pivot axis; and pivotally connected to the rear triangle at a second link rear triangle pivot defining a second link rear triangle pivot axis; and a shock absorber device directly or indirectly interconnected between two of the front triangle, rear triangle, first link and second link, for resiliently impeding relative movement of the suspension system from an unloaded at-rest position; wherein: the suspension system has a travel, being a range of movement of the rear wheel axle from the unloaded at-rest position to a full compression position; the rear triangle defines an instant centre; and characterized in that: with a bicycle equipped with the suspension system, resting on a horizontal surface, with the suspension system at 20% to 35% of total suspension travel from the unloaded at-rest position: the first link front triangle pivot axis and the second link front triangle pivot axis are no higher than a horizontal line passing through the instant centre; and a front triangle pivot line passing through the first link front triangle pivot axis and the second link front triangle pivot axis is substantially horizontal. the first link front triangle pivot axis and the second link front triangle pivot axis are no higher than a horizontal line passing through the instant centre; and a front triangle pivot line passing through the first link front triangle pivot axis and the second link front triangle pivot axis is substantially horizontal.