These off-road tough brackets securely mount MAXTRAX, TRED Pro and other similar hole spacing recovery devices to the side profile of a Front Runner Slimline II Rack. Also use for mounting the RRAC149 (sold separately). Adjustable in height and angle to compliment various vehicle profiles. Includes 2 types of bolts for holding either 1 or 2 pairs of MAXTRAX/TRED Pro. Built to mount to the side profiles of a Slimline II roof rack but are also compatible with the original Slimline rack. Finished with the same durable, weather resistant black powder coating as the Slimline II Rack. The included bolts can be substituted with the REQU120 (sold separately) to lock MAXTRAX in place. Note: REQU259 is required when mounting 2 pairs of MAXTRAX EXTREME.Note: This product is not compatible with Slimsport rack kit range.