mp08Product Description. In keeping with the Gen 1 source material, MP-08 Grimlock is based upon the nostalgic tripod-stance concept of the tyrannosaurs; his robot mode offers a wider range ofThe MP08-34X is a 3-way, manual pull to shift, spring return, directional hydraulic cartridge valve. Operation. In its neutral position the valve blocks flow between ports 2 and 3. In the actuated