83L Rigid Mounts Installation for Rugged Cases

Quick answer

Install 83L Rigid Mounts by sliding them into the tie-down channels of your 83L Rugged Case, then bolting them to your roof rack or flat surface using 1/4-inch hardware (not included).

Installation steps

1. Position the case on your rack: Place the empty 83L Rugged Case on your roof rack or flat surface where you want it permanently. Mark the tie-down channel locations on the rack through the case slots. Check that the case does not interfere with rack crossbars or vehicle roof clearance before drilling.
2. Slide the mounts into the channels: Remove the case. Insert each 83L Rigid Mount into the tie-down channel from underneath so the flat bracket rests against the rack. The mount should fit snugly without forcing. If the mount does not slide in easily, verify you are using the correct channel orientation — the bracket is notched for one-way insertion.
3. Drill pilot holes if needed: If your rack does not have pre-drilled holes, use a 1/4-inch drill bit to drill through the mount holes and into the rack. Deburr any sharp edges. Drill slowly to avoid spinning the mount; clamp it in place if the rack surface is slippery.
4. Bolt the mounts to the rack: Insert 1/4-inch bolts through the mount holes and into the rack. Add a lock washer under the bolt head and a flat washer on the underside. Tighten to hand-tight plus a quarter turn with a wrench. Do not use an impact driver — over-tightening can strip the threads or crack the powder coating.
5. Reinstall the case and test fit: Place the 83L Rugged Case back onto the mounts. The case should sit flush and not rock. Open and close the latches to confirm clearance. If the case rocks, one mount may be slightly higher — loosen the bolts, shim the low side with a flat washer, and retighten.

Product facts

• 83L Rigid Mounts: The 83L Rigid Mount is a hard-mounted system designed to mount an 83L Rugged Case to a roof rack or anything with mounting capability. It has 1/4-inch holes to bolt down and is made of .188 black powder-coated steel. The 1/4-inch hole pattern is standard, so you can use off-the-shelf hardware, but the powder coating means you should avoid over-tightening or scratching the finish to prevent rust.