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Roof Rack Cross Bars for GMC Terrain 2018-2024
Roof Rack Cross Bars for GMC Terrain 2018-2024
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Roof Rack Cross Bars for 2018-2024 GMC Terrain — Raised Rails — Lockable Aluminum Pair — 220 lb / 100 kg
Low-profile roof rack cross bars for the 2018-2024 GMC Terrain with raised roof side rails (visible gap between rail and roof). Lockable clamp-on design, U-bolt compatible mounting and a top channel for sliders/T-bolts — ideal for roof boxes, cargo baskets, bike/kayak/ski carriers, and camping gear.
Why Choose These Roof Rack Bars
- Real capacity: Up to 220 lb / 100 kg (never exceed vehicle/roof ratings).
- Anti-theft security: Integrated lock & keys help deter removal.
- Accessory-ready: Works with common roof rack mounts — U-bolt compatible and top channel sliders/T-bolts.
- Adjustable width: Sliding clamps let you set ideal front/rear bar spacing on the Terrain raised rails.
- All-weather build: Rust-resistant aluminum, coated hardware, and rail-protecting rubber pads.
- Lower wind noise: Aerodynamic crossbar profile helps reduce drag and noise.
- No drilling: Clamp-on installation to the raised side rails.
Condition
New: Brand-new, unused, unopened, undamaged item in its original packaging.
Technical Details
| Item | Roof Rack Cross Bars (Front + Rear) |
| Vehicle | 2018-2024 GMC Terrain with raised roof side rails (not for bare roof or flush rails) |
| Capacity | 220 lb / 100 kg (do not exceed vehicle/roof ratings) |
| Material | Aluminum bars; coated hardware; rubber interfaces |
| Finish | Black or Silver, low-gloss |
| Features | Lockable, Adjustable, U-bolt compatible, Top channel (T-bolt/slider), No Drilling, Aerodynamic, Rust-Resistant, Water-Resistant |
| Placement on Vehicle | Roof (front & rear bars) |
| Number of Pieces | 2 (pair) |
Fitment Tip: Fitment Tip: For the 2nd-generation GMC Terrain (2018-2024 model years) with factory raised roof side rails only — the rails sit above the roof with a visible gap underneath. Roof rails are standard on SLT, AT4 and Denali and optional on SLE (Driver Convenience Package or Elevation/Black Edition); factory roof rails required — if your Terrain has no side rails, check your roof before ordering. Not for 2010-2017 or 2025+ Terrain models (different roof), bare roofs or flush rails. If your Terrain has the SkyScape sunroof, check the clearance between the bars and the glass before opening it with the rack installed.
Rack capacity is 220 lb. Your vehicle's factory roof load limit may be lower — follow your owner's manual.
What’s in the Box
- 2 × Roof Rack Cross Bars (Front & Rear)
- Complete Mounting Hardware
- Lock & 2 Keys
- Quick Install Guide
📄 Need printed instructions? Download the TRX1 User Manual (PDF)
Quick Install Guide
- Insert mounting brackets into the aluminum crossbars.
- Place bars on the roof and mark positions on the raised rails.
- Adjust feet to match your rail size; pads must sit flat.
- Tighten evenly with the supplied hex key until seated—do not overtighten.
- Re-check all fasteners on both sides; bars must not move by hand.
- Confirm rubber pads and plastic covers are aligned and fully seated.
- Close end caps and lock the feet; store the spare key safely.
- Do not use with an open sunroof; verify clearance after install.
Tip: The Terrain roof is narrower at the rear. Install the shorter bar at the rear and the longer bar at the front.
Correct Bar Orientation
Install with the profile’s front lip facing the vehicle’s FRONT. Both crossbars must face the same direction; incorrect orientation can increase wind noise.
Confirm your GMC Terrain has raised roof side rails before purchase. Never exceed the lowest-rated component (vehicle roof, rails, bars, or accessories).