DFX Beta X-Trainer Fork Upgrade Kit 250 / 300Beta X Trainer Fork Upgrade Kit 250 300 NEW RELEASE LIMITED STOCK The DFX XFactor fork upgrade kit for the Beta X Trainer gives a plush and predictable feeling at all speeds, and soaks up bumps without deflection. It stops excessive diving, gives improved brake control, and is awesome at downhill. It comes with compression valve, oring, compression shim stack and check plate. The valves are hard anodized. The compression valve uses 24mm OD face shims