ACS ROOF | Over Truck Cap Platform | Smartcap

Leitner Designs ACS ROOF platform mounted over an RSI SmartCap, product view

Leitner Designs ACS ROOF SmartCap platform, rear view

Leitner Designs ACS ROOF SmartCap platform loaded with gear

Leitner Designs ACS ROOF SmartCap platform, detail view

Leitner Designs ACS ROOF custom cross bar extrusion comparison

Leitner Designs ACS ROOF extra cross bar for the platform rack

Leitner Designs ACS ROOF custom front and rear aluminum extrusion detail

Leitner Designs ACS ROOF custom side extrusion detail

ACS ROOF | Over Truck Cap Platform | Smartcap

Overhead perspective of ACS Roof Platform installed on SmartCap, illustrating full coverage and accessory mounting options.

ACS ROOF | Over Truck Cap Platform | Smartcap

$1,195.00

Select ACS ROOF Platform by Your ACS FORGED Rack Size

Quantity

ACS ROOF: The Modular Over-Truck-Cap Platform for Your RSI SmartCap

A heavy-duty, no-drill aluminum platform that bolts directly to your RSI SmartCap's factory T-slot tracks — infinitely adjustable load bars, built for overland travel and commercial utility, and made in the USA.

6'-6" TRUCK CAP RACK 72" LONG is currently on backorder. Est. to ship in 2-3 weeks. All other sizes are available for immediate shipment.

Mounts to your SmartCap's factory T-slot tracks with eight 8mm bolts — no drilling, no fabrication. All hardware included. Please review the fitment dimensions below before purchasing.

✓ Direct-mount, no-drill — bolts into the factory-installed track nuts on your SmartCap T-slot system with eight 8mm bolts. No drilling or fabrication required.
✓ 6061-T6 aluminum extrusions — custom bars deliver over 2x the yield strength of typical rack systems.
✓ Zinc-plated steel mounting brackets — laser-cut from 1/8" steel for exact fitment and flex-free performance.
✓ Sliding, adjustable load bars — fully adjustable for mounting rooftop tents, fuel packs, solar panels, and more.
✓ T-slot accessory compatible — works with most Yakima and Thule accessories that mount via T-slot.
✓ Five fitment options — available in five part numbers to precisely fit RSI SmartCap models from 5' to 6'-1/2" bed lengths.

Why ACS ROOF

The ACS ROOF Over Truck Cap Platform is a modular, heavy-duty rack system engineered specifically to fit the RSI SmartCap. Built for off-road use, overland travel, and commercial utility, this USA-made aluminum platform mounts directly to your SmartCap's factory-installed T-slot tracks using eight 8mm bolts — the strongest and most versatile rack in its class, built to carry rooftop tents, gear, and accessories with confidence.

Whether you're carrying a rooftop tent, hauling jobsite gear, or heading into the backcountry, the ACS ROOF Platform delivers elite-level performance and modularity — trusted by overlanders, contractors, and fleet operators alike. Every ACS ROOF is over-engineered and over-built in Corona, California, with Grade 10.9 black Zi-Ni fasteners and a dual-stage Leitner powder coat finish.

Specifications

Weight	45–56 lbs (depending on size)
Material	6061-T6 aluminum
Mounting brackets	Laser-cut 1/8" zinc-plated, powder-coated steel
Mounting	Direct to SmartCap factory T-slot tracks with eight 8mm bolts — no drilling
Fasteners	Grade 10.9 black Zi-Ni coated with Loctite
Accessory compatibility	Compatible with most Yakima and Thule T-slot accessories
Finish	Dual-stage Leitner powder coat
Load capacity	1,000 lbs static, 500 lbs on-road, 300 lbs off-road (always check your vehicle manufacturer's roof load rating)
Shipping	Ships in a single flat-pack box via UPS Ground
Origin	Designed, engineered, and manufactured in the USA

Fitment by Part Number

The ACS ROOF was designed for the RSI SmartCap, but if your truck cap has an aluminum mounting rail it will most likely fit — check that your cap's rails fall within the adjustment range below.

Part #	Max rail width (driver–passenger)	Min rail length (front–back)
00-GTCR-1801	50"	38"
00-5.0MTCR-1802	40"	38"
00-5.6TCR-1803	48"	38"
00-6.6TCR-1804	48"	44"
00-6.6TCR72L-1988	48"	62"

Installation

Install in under an hour with basic hand tools — the platform mounts directly to your SmartCap's factory T-slot tracks, no drilling or fabrication. All necessary hardware is included.

Position the platform

Set the ACS ROOF platform onto your SmartCap's factory-installed T-slot tracks.

Secure the eight 8mm bolts

Thread the eight 8mm bolts into the pre-installed track nuts and torque to the spec in the install guide.

Adjust the load bars

Slide the load bars into the toothed channels and position them for your gear before locking them in place.

Download the full installation instructions (PDF) →

Frequently Asked Questions

See all FAQs →

Does the ACS ROOF platform require drilling to install on my SmartCap?

No. It mounts directly to your RSI SmartCap's factory-installed T-slot tracks using eight 8mm bolts that thread into the pre-installed track nuts — no drilling or fabrication required.

Which SmartCap models does it fit?

It's available in five part numbers covering RSI SmartCap models from 5' to 6'-1/2" bed lengths. Check the fitment table above to match your cap's rail width and length to the right part number.

Will it fit a truck cap other than an RSI SmartCap?

It was designed for the RSI SmartCap, but if your truck cap has an aluminum mounting rail it will most likely fit — as long as your cap's rails fall within the adjustment ranges listed in the fitment table above.

What is the load capacity?

It's rated at 1,000 lbs static, 500 lbs on-road, and 300 lbs off-road. Always confirm your vehicle manufacturer's roof load rating, as it may be lower than the rack's capacity.

What can I mount on it?

The sliding load bars are fully adjustable for rooftop tents, fuel packs, solar panels, and more, and the platform works with most Yakima and Thule accessories that mount via T-slot.

Tags: ACS ROOF