Sawtooth STRETCH ACMS vs Tonneau Cover with Rack

 

If you own a pickup and spend any time outdoors, sooner or later you run into the same problem.

Your truck bed is useful, but your gear does not always fit neatly inside it.

Kayaks, surfboards, bikes, skis, ladders, camping bins, coolers, and jobsite equipment have a habit of being long, tall, awkward, expensive, or all four at once. That is why many truck owners start looking for a tonneau cover with a rack.

At first, that setup sounds like the perfect answer. Keep smaller cargo covered in the bed. Put the larger cargo on top. Problem solved.

Sometimes, yes. But not always.

A rack can add carrying options, but it can also add cost, height, complexity, wind exposure, rear-visibility issues, and extra loading work. It may protect the gear inside the bed, but the gear riding on the rack is still exposed.

This guide compares a tonneau cover with rack against Sawtooth STRETCH ACMS so you can decide which setup better fits how you actually use your truck.

Quick Answer: Which Is Better?

A tonneau cover with rack can make sense if you regularly carry long items above the bed, such as ladders, kayaks, canoes, or construction materials.

Sawtooth STRETCH ACMS makes more sense if you want to protect and secure cargo inside the bed, including taller, bulkier, or irregular cargo that rises above the bed rails.

Choose a Rack Setup If...

• You frequently haul long items above the truck bed.
• You do not mind extra height and wind exposure.
• You are comfortable lifting heavier gear onto a rack.
• You need the bed open for smaller cargo underneath.

Choose Sawtooth STRETCH ACMS If...

• You want adaptive cargo protection inside the bed.
• You haul gear that does not always stay below the bed rails.
• You want an alternative to flat-only and restrictive covers like tonneau covers and truck bed covers.
• You want more versatility without committing to a fixed rack or cap setup.

What Is a Tonneau Cover With a Rack?

A tonneau cover with a rack combines two ideas.

The tonneau cover or truck bed cover sits over the bed. The rack sits above or around it, creating a higher platform for longer cargo.

That can be useful if you need to carry a kayak, ladder, lumber, or other long item while still keeping smaller cargo covered in the bed.

For outdoor gear, safe loading matters. REI’s guide to transporting a kayak explains common gear such as crossbars, racks, cam straps, and bow and stern lines. REI also has a useful YouTube video on how to transport a kayak.

That kind of setup works well for certain cargo. But it is not the same as protecting the cargo itself.

Tonneau Covers With Racks

There are several common ways truck owners combine racks and bed coverage.

Some systems use racks mounted around the tonneau cover. Some use racks attached above a hard cover. Others use a cap with a rack on top.

Each option has tradeoffs.

Aluminum Tonneau With Rack

Aluminum covers are sturdy and can provide strong protection for low cargo that fits under the cover.

When paired with a rack, this setup can carry long items above the bed while keeping smaller gear covered below.

This can be useful for kayaks, ladders, fishing rods, pipe, or longer materials. But the larger item on the rack is still exposed to weather, road grime, sun, and theft risk.

It also adds height, which can matter in garages, parking structures, drive-throughs, and tree-lined campsites.

Credit ADARAC

Truck Cap With Rack Attached

A truck cap with a rack gives you fixed-height enclosed cargo space plus an upper carrying platform.

This can be a strong option for camping, work storage, pets, outdoor gear, and owners who want a more permanent enclosed setup.

The tradeoff is that a cap changes your truck full-time. It adds height, weight, cost, and visibility changes. It also gives you one fixed cargo shape. If your load does not fit well inside that shell, you are still working around the system.

For a deeper breakdown, read Tonneau Covers vs. Caps.

Credit TRACRAC CAPRAC

Rack Without a Tonneau Cover

Some truck owners skip the bed cover entirely and install a rack directly to the truck bed.

That may work if your main priority is carrying long cargo and you do not care much about covering the bed.

The downside is obvious. The bed cargo is exposed.

Rain, snow, dust, road grime, sun, and curious eyes all have easy access to your gear. That might be fine for lumber, ladders, or rough equipment. It is less ideal for luggage, tools, camping bins, groceries, or anything you want protected.

Toyota’s Genuine Toyota Deck Rail Kit is a good example of how truck makers approach adjustable tie-down and cargo-support hardware in the bed. Tie-down points matter, but they are only one part of cargo management.

Credit Yakima

Pros and Cons of Tonneau Covers With Racks

A rack-and-cover setup can be useful, but it is not automatically the best answer for every truck owner.

Pros

• More carrying options: Long items can ride above the bed.
• Covered low cargo: Smaller gear can stay under the tonneau cover.
• Useful for outdoor gear: Kayaks, surfboards, skis, ladders, and bikes may fit better on a rack.
• Good for certain work uses: Contractors may benefit from carrying long materials above the bed.

Cons

• Large items remain exposed: Gear on the rack is still exposed to weather, UV, dirt, and theft risk.
• Higher loading height: Kayaks, bikes, or ladders may need to be lifted above shoulder level.
• Added cost: Buying a rack and a compatible bed cover can get expensive.
• Added wind exposure: Tall cargo can affect noise, drag, handling, and fuel economy.
• Visibility issues: Rack cargo can block rear visibility depending on the load.
• Bed access conflicts: Some rack systems can interfere with opening, folding, or removing the cover.

Safe securement also matters. The National Highway Traffic Safety Administration’s Secure Your Load guidance reminds drivers that cargo should be tied down so it does not drop, shift, leak, or escape the vehicle.

The Limitation of Flat Systems

Tonneau covers and truck bed covers are flat systems.

Flat systems only work when cargo stays below the bed rails.

That is the core limitation.

If your bed is carrying low cargo, a flat cover can be useful. It can help reduce weather exposure, keep gear out of sight, and give the truck a cleaner look.

But once cargo rises above the bed rails, a flat system has to get out of the way.

That means the cover is no longer protecting the load that actually needs help.

To compare common cover styles, read A Guide to Different Types of Truck Bed Covers.

Where Sawtooth STRETCH ACMS Is Different

Sawtooth STRETCH is not a tonneau cover. It is an Adaptive Cargo Management System, or ACMS.

That distinction matters because Sawtooth is built around a different job.

Instead of only covering low cargo, Sawtooth STRETCH is designed to protect and secure both small and large cargo. It can sit lower when the bed is carrying everyday gear, then adapt over taller, bulkier, and more irregular loads.

That makes it especially useful for pickup owners who haul cargo inside the bed and do not want to remove their bed system every time the load gets taller.

What Sawtooth Helps With

• Surfboards and paddleboards: Helps cover and secure longer recreational cargo.
• Camping gear: Adapts over stacked bins, coolers, soft bags, and bulky outdoor gear.
• Tools and equipment: Helps keep work cargo covered and contained.
• Smaller daily cargo: Works for luggage, groceries, duffel bags, and low-profile items.
• Irregular loads: Helps when cargo does not fit under a flat cover.

For model-specific applications, see Sawtooth STRETCH for the Ford Ranger, Ford F-150, and Toyota Tacoma.

Pros and Cons of Sawtooth STRETCH ACMS

Pros

• Adaptive protection: Covers more than just low cargo.
• More bed versatility: Lets your pickup remain useful across more loading situations.
• Alternative to caps: Provides adaptive cargo protection without a fixed-height shell.
• Lower everyday profile: Stays more compact than a permanent rack or cap setup.
• Practical for smaller trucks: Helpful when bed space is limited and cargo gets stacked.

Cons

• Not a roof-height rack: It does not carry cargo above the truck like a tall rack system.
• No built-in lock: It helps conceal and secure cargo, but it is not a locking hard enclosure.
• Still requires proper loading: Large or heavy cargo should always be properly tied down.

For a broader look at the category, read 10 Reasons You Need an ACMS.

Sawtooth STRETCH on a Ford Ranger

Which Setup Should You Choose?

The right answer depends on the cargo.

Choose a Tonneau Cover With Rack If...

• You carry kayaks, ladders, long boards, or work materials above the bed often.
• You are comfortable lifting gear onto a taller platform.
• You accept that rack cargo remains exposed.
• You want low cargo covered and long cargo carried separately.

Choose a Cap With Rack If...

• You want fixed-height enclosed cargo space.
• You use your truck for camping, work storage, or pet transport.
• You do not mind added height, weight, and a more permanent setup.

Choose Sawtooth STRETCH ACMS If...

• You want adaptive cargo protection inside the bed.
• Your cargo does not always stay below the bed rails.
• You want an alternative to flat-only and restrictive covers like truck bed covers and tonneau covers.
• You want your truck to load more, haul more, and do more.

The Bottom Line

A tonneau cover with a rack can be a smart setup for certain truck owners. If you regularly carry long items above the bed and do not mind the extra height, cost, and exposed cargo, it may be the right fit.

But it is not the only answer.

If your main problem is that cargo inside the bed gets too tall, bulky, or irregular for a flat cover, Sawtooth STRETCH ACMS solves a different problem. It gives pickup owners an adaptive way to protect and secure both small and large cargo without committing to a fixed rack or cap.

Browse current fitments on the All Products page, or review common product questions on the Sawtooth FAQs page.

Load more. Haul more. Do more.