A vehicle suspension damper comprising: a cylinder containing damping fluid and a piston assembly comprising a piston, a piston rod, a first fluid path and a second fluid path through the piston assembly for permitting damping fluid to pass from a first side to a second side of the piston during a compression stroke of the vehicle suspension damper; wherein said second fluid path comprises a bore in said piston rod, which bore has a first fluid port open to said first side of said piston and a second fluid port providing fluid communication with an interior of said piston, and the piston comprises a third fluid port providing fluid communication with the interior whereby, during a compression stroke, damping fluid may flow from the first side to the second side of the piston through the piston rod and the piston via the first, second and third fluid ports; a valve member (201, 301) for resisting fluid flow through the second fluid path, wherein the valve member is moved into the bore during compression and out the bore during extension, so as to displace at least some of the damping fluid through the first, second and third fluid ports, and wherein said valve member comprises a needle or needle-like member sized to be inserted into and withdrawn from said bore, whereby said valve member (201, 301) provides a restriction to fluid flow through the second fluid path, the restriction being independent of the pressure of the damping fluid caused by compression of the vehicle suspension damper characterized in that said bore comprises a blind bore and in that, in use, as said valve member (201, 301) is moved into the bore during compression the valve member (201, 301) firstly begins to block the second fluid path, thereby forcing said damping fluid to flow through the piston via the first fluid path, and secondly said valve member (201, 301) blocks the second fluid path, thereby blocking additional damping fluid from leaving the bore via the second fluid path whereby fluid pressure builds up within the bore to oppose any further compression of the damper. a cylinder containing damping fluid and a piston assembly comprising a piston, a piston rod, a first fluid path and a second fluid path through the piston assembly for permitting damping fluid to pass from a first side to a second side of the piston during a compression stroke of the vehicle suspension damper; wherein said second fluid path comprises a bore in said piston rod, which bore has a first fluid port open to said first side of said piston and a second fluid port providing fluid communication with an interior of said piston, and the piston comprises a third fluid port providing fluid communication with the interior whereby, during a compression stroke, damping fluid may flow from the first side to the second side of the piston through the piston rod and the piston via the first, second and third fluid ports; a valve member (201, 301) for resisting fluid flow through the second fluid path, wherein the valve member is moved into the bore during compression and out the bore during extension, so as to displace at least some of the damping fluid through the first, second and third fluid ports, and wherein said valve member comprises a needle or needle-like member sized to be inserted into and withdrawn from said bore, whereby said valve member (201, 301) provides a restriction to fluid flow through the second fluid path, the restriction being independent of the pressure of the damping fluid caused by compression of the vehicle suspension damper characterized in that said bore comprises a blind bore and in that, in use, as said valve member (201, 301) is moved into the bore during compression the valve member (201, 301) firstly begins to block the second fluid path, thereby forcing said damping fluid to flow through the piston via the first fluid path, and secondly said valve member (201, 301) blocks the second fluid path, thereby blocking additional damping fluid from leaving the bore via the second fluid path whereby fluid pressure builds up within the bore to oppose any further compression of the damper.