Touratech - Rear Brake Fluid Reservoir Guard - BMW F850GS /GSA, F750GS, F800GS 08-12, F650GS TwinInstallation Instructions On the BMW the brake fluid reservoir is all too easily accessible, putting it at risk of damage or tampering. Made from laser cut stainless steel, Touratechs brake fluid reservoir guard effectively prevents damage and undesired access to the reservoir lid, yet you can still easily see the fluid level. The guard simply bolts onto the existing mounting point.