Free Shipping. Ships in 1-3 Business Days
Price Match Guarantee
Safe/Secure Checkout
Questions? Chat or Call us: (409) 916-8280
10 Years of Testing. Engineered for RSI SmartCap. 1000 lbs Static Capacity.
The World's Strongest Cap-Mounted PlatformThe Leitner Designs ACS ROOF is the result of 10 years and hundreds of thousands of off-road miles. Specifically engineered to integrate with the RSI SmartCap, this modular, heavy-duty aluminum rack system is built to carry rooftop tents, gear, and commercial tools with absolute confidence.
Designed, engineered, and manufactured in Corona, California, this rack utilizes custom 6061 T6 aluminum extrusions that offer over 2X the yield strength of typical systems. It solves the biggest headaches of cap racks: flex, difficult assembly, and permanent damage from drilling.
The Problem & The Solution:The Pain: Many truck cap racks require drilling into the shell, leading to leaks, or they are too flimsy to support heavy rooftop tents.
The ACS Solution: Our platform is a 100% Bolt-On design that mounts directly to your SmartCap’s factory T-slot tracks using eight 8mm bolts. No drilling, no fabrication—just rock-solid performance.
Note: Please review all specifications and dimensions carefully before purchasing to ensure proper fitment with your RSI SmartCap or truck cap.
Key Features: The ACS Cap Platform
Mounts directly to existing factory T-slot tracks on your SmartCap. Secures tightly into pre-installed track nuts for a zero-damage install.
Custom heavy-duty aluminum extrusions provide unmatched rigidity for overland performance and commercial utility.
Fully adjustable crossbars slide along the rack length. Mount your rooftop tent exactly where you want it.
Laser-cut from 1/8" zinc-plated, powder-coated steel. Engineered for flex-free performance on washboard roads.
Standard T-track design works seamlessly with Yakima, Thule, and other overlanding accessories.
Installs in under an hour with basic hand tools. All hardware is included for a frustration-free setup.
Features high-strength Grade 10.9 black fasteners with Zi-Ni coating and Loctite to prevent loosening under vibration.
Efficiently ships via UPS Ground in a single flat-pack box, reducing shipping costs and environmental impact.
Engineered in the USA for Extreme LoadsWe don't cut corners. The ACS ROOF features heavy-duty aluminum construction with a dual-stage powder coat finish. Whether you're a contractor hauling jobsites gear or an overlander carrying a 3-person tent, this system is built to "Carry Your World."
300 lbs Off-Road Dynamic 500 lbs On-Road Dynamic 1000 lbs Parked Static 45-56 lbs Product Weight
"The integration with the RSI SmartCap is seamless. I was worried about noise and strength, but the ACS Roof platform is dead silent on the highway and doesn't budge with my iKamper on top. The bolt-on install into the SmartCap tracks was incredibly easy—no drilling into my expensive cap was the biggest win."
- Brandon K., Overland Adventurer Compatibility & Dimensions CheckThe ACS ROOF was designed for the RSI SmartCap; however, if your truck cap has an aluminum mounting rail, it may fit. Check your dimensions against the adjustment ranges below:
| Part Number | Max Rail Width (Pass-to-Driver) | Min Rail Length (Front-to-Back) |
|---|---|---|
| 00-GTCR-1801 | 50" | 38" |
| 00-5.0MTCR-1802 | 40" | 38" |
| 00-5.6TCR-1803 | 48" | 38" |
| 00-6.6TCR-1804 | 48" | 44" |
| Feature | Leitner Cap Platform | Generic Cap Racks |
|---|---|---|
| Installation | ✓ Direct Bolt-to-Track | ✗ Often Requires Drilling |
| Material | ✓ 6061 T6 High-Strength Aluminum | ✗ Lower Grade 6063 Aluminum |
| Hardware | ✓ Grade 10.9 Zi-Ni Coated | Standard Stainless/Zinc |
| Load Rating | ✓ 1000 lbs Static | Usually 500-600 lbs |
| Origin | ✓ Made in USA | Imported |
Whether you're heading into the backcountry or hauling gear to the jobsite, the ACS Roof Platform delivers elite-level modularity. It is trusted by fleet operators and overland contractors for its ability to handle vertical loads without shifting or bowing.
RSI SmartCap Models: Precise fitment for bed lengths from 5’ to 6’-1/2”. Custom Caps: Fits most caps with existing aluminum T-slot tracks.
CA Residents: ⚠️ WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov
Yes, if your truck cap features aluminum mounting rails. Please check the Adjustment Range in our specification table above to ensure your cap's rails fall within the max width and min length requirements for the specific part number.
No. This system is designed as a 100% bolt-on assembly. It uses existing T-slot tracks and factory track nuts for a secure mount without compromising your cap's integrity.
The platform itself is rated for 1,000 lbs Static and 300 lbs Off-Road Dynamic. However, you should always verify the weight capacity of your RSI SmartCap or specific truck cap shell before loading to the rack's maximum limits.
We use Grade 10.9 black fasteners with Zi-Ni coating to prevent corrosion. However, we recommend periodically checking the torque on the mounting bolts, especially after long trips on washboard or corrugated roads.
California Residents
Prop 65 Warning- Product may contain chemicals known to the State of California to cause cancer, birth defects or other reproductive harm. For more information, go to www.P65Warnings.ca.gov
Proposition 65 is a California law passed in 1986. Its goals are to protect drinking water sources from toxic substances that may cause cancer and birth defects and to reduce or eliminate exposures to those chemicals generally, for example in consumer products, by requiring warnings in advance of those exposures.
The regulation requires the State of California to revise and republish yearly a list of chemicals known to the State of California to cause cancer or birth defects or other reproductive harm. The current list contains over 900 naturally occurring and synthetic chemicals. This regulation also requires manufacturers to place warnings on products that contain any of the chemicals listed by the State of California. No other states require warnings of this nature, and products with Prop 65 warning language are legal to sell in all states. Detailed information regarding requirements for compliance to the California Prop. 65 is can be found at: www.P65Warning.ca.gov
We get it. You've got a lot of choice when it comes to online retailers.
Here's why we think you should shop with us at ExtrailAuto.
Great service from their staff. Robert help me through all the process with a request I had, he responded all emails in a timely manner and provided great help.
We received it within 3 days and installed the same day. Great awning and very well made.
the tent is very nice, comfortable and roomy.
Following the instructions was fairly easy. Its better to have second person to set it up. I really like the tent and the support that from ExtrailAuto. Really recommeded! Thanks
I love my trailhead roof top tent so much. It is so warm and spacious. Itās very simple to setup and put away. Extremely happy with my purchase. I waited to write a review till I used it multiple times so I could tell if I really liked it or not. Thereās not a thing I would want to change.
Give my jeep a solid sturdy look. Installation was ok if you follow the instructions properly.
Definitely a good product. Its super easy to install with instructions. It opens up nicely and shade coverage is good.
We have been on multiple trips with this tent. Its stable and comfortable with a good space for 2+ person to sleep in. Easy to setup and can be taken down under 10 minutes. The tent is waterproof and windproof and can be used during the winter season. Its worth the money and we are overall satisfied with our tent.
Material is of good quality. Easy to set up and teardown.
Looks great and very easy to install. Fits perfectly with no cutting on my Colorado 5 1/2 ft bed. As I unfolded the cover for the first time and each panel locked in place perfectly, I thought, Wow, that was easy.
