How to Install the UltraGroove and UltraGroove Metal Retractable Tonneau Cover
Feb 19 2026
- Tape measure
- Masking tape
- #2 Phillips screwdriver
- 3/8” wrench
- 5/32” Allen wrench
- 7/16” nut driver
- Utility knife
- Needle nose pliers
- Canister box
- Rail box
- Inside you'll find:
- Complete canister assembly
- Left and right rails
- Top cover
- Clamp pack & hardware
- Clamp extensions
- Drain tubes
- Foam seal
Place the canister at the front of the truck bed, directly behind the cab and centered side-to-side.
- If installing alone:
- Wrap the pull strap around the canister to lift and steady it.
- Rest the canister on temporary supports (such as the shipping box or buckets), elevating it 2–3 inches for rail clearance
- Proper centering makes rail installation significantly easier.
Before installing rails:
- Make sure the handle latches are IN.
- If the latches are out, the handle can catch on the rail during installation
- Rail Installation Overview:
- Identify left and right rails (plastic cap faces tailgate).
- Remove protective foam backing (packaging only).
- Hook the outside groove of the rail onto the rail guide.
- Align the rail sill vertical between the 3rd and 4th ribs of the rail guide spacer
- Rotate the rail downward into position.
- Slide forward until fully seated.
- Secure with rail screw, flat washer, and lock washer.
- If the rail feels stuck while pushing forward, gently lift the handle while continuing to apply forward pressure
- Close the tailgate and pull the rails back to ensure proper tailgate cap seal engagement.
- Correct spacing should allow approximately 1/4" gap between the bottom cap and the tailgate
- You can also use the included Tailgate Seal Gauge to confirm proper alignment.
- Next Steps:
- Mark the front rail position with masking tape.
- Apply the foam seal across the front sill.
- Slide the rails and canister back into position.
- Secure the top cover with the included screws.
- Proper foam installation is critical for water resistance.
Each rail requires front and rear clamp extensions labeled:
- FL (Front Left)
- FR (Front Right)
- BL (Back Left)
- BR (Back Right)
- Orientation matters:
- Tailgate end: 1/8” black shim, set screw facing tailgate
- Cab end: 1/16” white shim, set screw facing cab
- Slide extensions into place and tighten with a 5/32” Allen wrench.
- Attach two clamp assemblies per rail.
- Rotate back plates toward the center of the truck bed before tightening
- Before fully tightening:
- Measure between rails at both the canister and tailgate.
- Confirm measurements match specifications for your part number
- Adjust shims as needed (white = 1/16”, black = 1/8”).
- Proper BR dimension is critical for optimal cover performance.
- Once correct, tighten clamps to 70 in-lbs
Kickstands stabilize the rail at the tailgate end.
- Attach to clamp grip.
- Rotate so pivot foot contacts the flattest bed wall surface.
- Adjust bolt inward until rails are visually level
- Re-check BR measurement after leveling.
- Screw drain fittings into the tailgate cap.
- Slide drain tubes onto fittings.
- Route through factory holes or drill 5/8”–3/4” holes if necessary.
- Trim tubing as needed
- Proper drain installation is essential for maximum water management.
- Underside of sweep seals
- Top of wear strips inside rails
- Ensure seals angle outward toward the cover, not inward toward the bed rail.
- Avoid alcohol, petroleum, or silicone-based cleaners.
- Insert fittings into pre-drilled holes under the canister until they click into place.
- Route tubing downward through factory access ports or drilled holes, ensuring proper drainage
- Attach the 4” Velcro strip to the existing pull strap.
- Secure to the underside of the driver-side rail to keep the strap off the bed floor
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