All 50 states · no minimum
From our CA warehouse
Structural · no-hassle
No drilling · hand tools
Fits: 2007–2018 (5.8ft)
Precision-engineered bolt-on fit — no modification required
6061-T6 Aluminum
850 lb
450 lb
~180 lb
Powder-Coated Black
Bolt-On · Bed Rail Clamps
Lifetime Structural
75–90 minutes
13/17mm sockets, Phillips screwdriver, torque wrench
Intermediate · 2 people required
No drilling — uses existing bed holes
2007–2018 · 5'8" Short Bed · Matte Black
Hard shell. Natural light. Clamps on.
Full aluminum topper with tinted side windows for the Sierra and Silverado 1500 short bed.
Light in the bed, gear locked down, rooftop tent ready.
Tempered glass on both sides. Natural light in the bed. Tinted for privacy — people see the cap, not your gear.
Gas struts hold them open hands-free. Full reach to the front of your bed. Keyed locks on both sides, weather-sealed.
Dual full-length tracks, front to back. Crossbars, rooftop tent, cargo basket — anything T-slot. 450 lbs moving. 850 lbs parked.
Both side walls pre-drilled. Bolt in a drawer system, shelves, or tool organizers. No drilling. Modules sold separately.
6000-series aluminum with EPDM gaskets on every door and window. Cold-tested in Canada. Your gear stays dry.
6-piece flat-pack. Assemble in 1–2 hrs. Clamp to your bed rails in 30 min. Take it off clean — your truck looks stock.
| Fits | GMC Sierra 1500 & Chevy Silverado 1500 — all trims |
| Year | 2007–2018 |
| Bed Size | 5'8" Short Bed |
| Material | 6000-Series Aluminum |
| Finish | Matte Black Powder Coat |
| Side Panels | Tinted Tempered Glass Windows |
| Rear Door | Tinted Tempered Glass |
| Roof Rails | Dual Full-Length T-Slot |
| Roof Load | 450 lbs moving · 850 lbs parked |
| Cap Weight | ~175 lbs (79 kg) |
| Install | No-drill clamp system |
Fits all 2007–2018 GMC Sierra 1500 and Chevy Silverado 1500 with a 5'8" short bed.
No. Clamps to your bed rails. Take it off and your truck looks stock.
Yes. Add crossbars to the T-slot rails. 850 lb static rating when parked.
Most guys finish in under 2 hours — assembly and mount included.
Yes. EPDM gaskets on every door and window. Tested through Canadian winters.
Most customers complete the install in 75–90 minutes with two people. No drilling is required — the cap secures to your existing bed rail holes with our stainless clamp kit. A printed install guide with torque specs is in the box.
The TKMAUTO bed cap is a solid aluminum shell — no side windows. This keeps the structure stiff, the interior dark for gear security, and the weight down. If you need a window version, contact us for a custom build.
This cap is cut for the specific year, make, model, and bed length listed in the fitment box at the top of the page. If your truck matches that spec, the cap is engineered to bolt right on. Short-bed and long-bed versions are not interchangeable.
No. The shell is marine-grade 5052 aluminum (which does not rust), and the powder-coat is UV-stabilized automotive grade — the same process used on Rough Country and ARB components. We back the finish with our lifetime structural warranty.
Free shipping to all 50 U.S. states. Every order ships from our California warehouse via freight carrier. Every bed cap carries our lifetime structural warranty, with fitment support direct from our California team.
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