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Thule TracRac SR Sliding Truck Bed Ladder Rack w/ Cantilever - 1,250 lbs

Thule TracRac SR Sliding Truck Bed Ladder Rack w/ Cantilever - 1,250 lbs

Item # TH43002XT-508EX
Our Price: $1,899.85
Ladder Racks

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Shipping Weight: 68 lbs
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This versatile, sliding ladder rack adjusts along the length of your truck bed and easily removes from the included T-track base rails. Over-the-cab extension lets you carry long pipes, lumber, and more. Lightweight, rustproof aluminum construction. Fastest Shipping and Great prices for Thule TracRac SR Sliding Truck Bed Ladder Rack w/ Cantilever - 1,250 lbs. Read our customer reviews of Thule ladder racks. Call 1-800-940-8924 for expert service or order your ladder racks part number TH43002XT-508EX by Thule online at
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Thule Ladder Racks - TH43002XT-508EX

  • Truck Bed
  • Sliding Rack
  • Thule
  • No-Drill Application
  • Over the Cab
  • Work
  • Aluminum
  • Fixed Height

This versatile, sliding ladder rack adjusts along the length of your truck bed and easily removes from the included T-track base rails. Over-the-cab extension lets you carry long pipes, lumber, and more. Lightweight, rustproof aluminum construction.


  • Adjustable ladder rack slides in unique, T-track base rails along the full length of your vehicle's bed
    • Perfect for long loads, short loads, and everything in between
    • Integrated, quick-release clamping knobs can be loosened to move rack, tightened to secure it in place
    • Rack can be removed from track quickly and easily
  • Aerodynamic design reduces drag and wind noise
    • Elliptical crossbars are streamlined to minimize wind resistance
    • Airfoil trip strips prevent air from whistling through slots
  • Cantilever extension provides additional support for long loads
    • Attaches to crossbar to add 32" of length to rack
    • Sits over the cab of your truck
    • Removes easily for a more compact ladder rack
  • 6000-Series aluminum construction is strong and durable
    • Lightweight material won't detract from load rating
    • Internal web structure of crossbars increases strength and rigidity
  • Dual-stage powder coat finish adds extra rust protection
    • E-coat is followed by a clear coat for improved resistance to scratches
  • 4 Heavy-duty, aluminum load stops included - keep ladders, lumber, and other cargo in place
    • Mount quickly and easily in top slots of crossbars
    • Slide within slots to adjust
    • Lock in place with simple twist of a knob
  • 4 Side cleats attach to uprights for additional tie-down options
  • No-drill installation - mounts in stake pockets
  • Wide base on either side of each upright provides superior stability - no need for additional bracing
  • Made in the USA


  • Carrying capacity: 1,250 lbs
    • Capacity of cantilever extension: 1,000 lbs
  • Crossbar length: 69-1/2"
  • Rack height (with base rails): 27-5/16"
  • Limited lifetime warranty

TracRac Base Rails

TracRac SR Sliding Rack Base Rails

The TracRac base rails provide the foundation for this unique, customizable system. No-drill, stake-pocket installation yields securely mounted rails that sit atop your factory side rails. Each rail has 2 tracks for maximum adjustability.

TracRac Sliding Rack

Because the rack section at the front of your truck bed mounts to a different T-track than the one in the rear, the sections can be moved so that they are right next to each other. The result is unobstructed access to your truck bed and improved aerodynamics when you are not using the rack.

TracRac offers accessories that are designed to mount in these tracks. Base rail tie-downs (sold separately) give you additional cargo-management options. These rustproof, aluminum tie-downs slide across the rails for optimal placement and are secured in place with the turn of a knob.

Cantilever Over-the-Cab Extension

TracRac Cantilever Over-the-Cab Extension

Included with your TracRac system is the cantilever extension, which attaches to the front crossbar to provide 32" of additional length over the cab of your vehicle. With this extension piece mounted you can carry long loads safely and easily. The crossbar of the cantilever extension is constructed in the same fashion as the other TracRac crossbars so that you get the same sturdy, aerodynamic styling throughout.

TracRac Slotted Crossbars

The sturdy aluminum crossbars on all TracRac truck racks feature integrated slots for mounting and easily adjusting accessories, such as the included load stops. These slots appear on both the top and bottom of the bars for the ultimate in mounting versatility. Like the pieces that mount in the base rails, these accessories also have quick-release knobs that let you loosen and tighten them with a mere twist of a knob so that they can be positioned as needed along the bars.

A built-in trip strip at the front of each crossbar shields the slots from wind, maintaining the aerodynamic quality of the bars and preventing that annoying whistle you often find with slotted bars.

Included Tie-Downs

TracRac Load Stop Accessories

Included with your TracRac SR are 8 tie-down accessories. The 4 load stops are designed to mount in the slots of the crossbars and slide along them for quick, easy adjustment. These bookend-style pieces help to hold ladders and lumber in place on the crossbars. They also have built-in loops for securing tie-down straps.

TracRac ARC Side Cleats

The 4 cleats attach at any of the provided mounting points along the outsides of the upright supports so that you can tie down items that require additional anchoring or that sit in your truck bed.

Sturdy, Rustproof Construction

The TracRac base rails and rack system, as well as most TracRac accessories, are constructed of durable, lightweight aluminum. Because aluminum is lighter than steel - the material most often used for truck racks - only a small percentage of your truck's cargo capacity is taken up by the rack itself, enabling you to pack on more weight than you could with a steel system.

Even though aluminum is already rustproof in itself, TracRac has taken the extra step of adding a dual powder coat finish to further protect your rack. The electrostatic powder coat (e-coat) clings to the metal surface better than traditional paint finishes for a more durable covering. The second coat is a clear finish that adds extra shine and protection from scuffs and scratches.

43002 Thule Track Rack SR Sliding, Truck Bed Rack

21508 Thule Track Rack Base Rails - Ford F150 Super Crew Trucks

24002 Thule Track Rack Cantilever Over-the-Cab Extension - Full Size

Replaces TracRac TA21508-02-02

Installation Details TH43002XT-508EX Installation instructionsAlternate Instructions TH43002XT-508EX Installation instructions

This Product Fits The Following Vehicles

Customer Reviews

Thule TracRac SR Sliding Truck Bed Ladder Rack w/ Cantilever - 1,250 lbs - TH43002XT-508EX

Average Customer Rating:  4.6 out of 5 stars   (56 Customer Reviews)

This versatile, sliding ladder rack adjusts along the length of your truck bed and easily removes from the included T-track base rails. Over-the-cab extension lets you carry long pipes, lumber, and more. Lightweight, rustproof aluminum construction.

2020 Ford F-150

Pretty good ladder rack. I like having the ability to slide the racks if needed. The install is doable. If you are installing the cantilever, make sure you swap out the top mount before assembling the top bar. The legs come pre-assembled with the regular top mount from the factory. The regular top mount has to be removed and the cantilever top mount installed to assemble the cantilever part of the ladder rack. Also, the bolts that hold the top mount on have loctite on them from the factory and are really hard to remove. I ended up stripping the bolts out. etrailer was very helpful and sent me a replacement hardware kit with all the bolts needed to finish the install. Between the directions provided and a few YouTube videos, the install was pretty straightforward. I am very happy with the product overall.


I bought these for my 2018 Ford F 150 5.5foot bed.
These are definitely one of the more expensive ladder racks you can buy but totally worth it. Very high quality and easy to install. I bought these for the ease of removal.
I use for all my vehicle needs.

Marvin S.


Still holding up well. Have since added the toolbox slider kit



2023 Ford F-150

2016 Ford F-150


This is an awesome system, and in my opinion, the best option to pair with the Retrax ProMX bed cover. The sliding rails for adjustable distance is awesome. Can't beat the versatility of this rack, and after adding additional load stops for cantilever rail, bolt on ratchet straps, and base rail tie down points (which will actually allow me to haul things on top of my bed cover, which is rated to carry 500lbs) this system completely changes my ability to haul whatever I need in my truck.


The TH43002XT-781EX installed onto my 2016 GMC 2500 HD Sierra 6-1/2 bed Denali pickup truck without drilling any holes. Total install time including the cantilever took about 2 1/2 hours with two people. The tools we used included a wide range of metric hex keys, a crescent and some metric open-endeds.

The base rails mounted to the bed rails using a threaded aluminum insert for the rear stake pockets (which align with a thru-hole already present in the bed) and an expanding rubber bushing for the front stake pockets (since the front pockets don't have a thru-hole). Evidently some pickup rails cant to one side or another so the base rail install kit includes shims but my truck did not require them.

Once installed the rails are rock solid and subsequently the racks are also rock solid. The cantilever comes with replacement saddles that mount up to the rack with a total of 12 bolts making the ensemble nearly missile proof. Almost all bolts are pre-treated with thread locker.

My truck already has knobby tires so I did not notice any particular additional wind noise.

My plan for the TracRac is to attach a custom mounted Rhino-Rack, which we'll be doing ourselves.

I like this product because the fitment on etrailer was reliable and I did not have to drill any holes or use any special tools. The rack is also ridiculously heavy duty, which is more than up to the job of holding the Rhino-Rack I'm going to custom fit to it. We'll be doing some off-roading so this heavy equipment gives me a lot of confidence.

Thule always makes great products and I am delighted with the TracRac and I'm very happy with etrailer's site.


The rack system is very well put together. I only had a couple of issues with the instalation.
There wasn't any directions with the base rails, so it took a bit to figure out how it went together and what holes to use for my truck.
The canteilever kit, The top bolt that holds the cross bar should be a button screw and square nut, not a square head bolt and nut. with the square head bolt and nut it could interfere with a long load since it sticks up and could catch on anything being loaded . All and all a nice rack.
I got this type of rack hoping that I could slide the rear post forward as to not interfere with my 5th wheel when towing it.
That part is yet to be dedurmined.


It has been a very useful, well built, well designed product for my truck.
I utilized it for a move from the Bay Area to the central coast. I made numerous loads. Without it, I would not have been able to transport all of my ladders, lumber and other long bulky materials.
I leave it on my truck and use the multiple tie downs.
This has been one of the best purchases I’ve made and have no regrets.


Product is great and installed easily once I figured out that for my Ram 1500 Laramie, the pocket stakes are too big for the rubber blocks and won't work and I did have to drill thru the plastic molding. Once I figured out the stake holes wouldn't work I looked at the drawing again and the holes where Tundra is listed gave me the idea to try those. Those holes worked on the Ram and I ended up drilling out the "spikes" that hold the molding onto the sheet metal. No drilling thru the sheet metal was required, only the plastic.

Maybe I missed an install video for the Ram, it would have made the install much quicker and I wouldn't have to buy covers for my now cut out front stake pocket holes which weren't covered by the rails as I hoped they would.

I haven't installed the cantilever as I don't need it yet.


Customer service was excellent. With Tiffini's help and Georges and Carol's updates this was a smooth purchase. Tiffini's help in sending links to me with the correct part choices for my truck was extremely valuable and saved me a lot of time.


I ordered the TracRac SR (sliding rack) for my 2019 Ram 3500. It took a while to get here, probably due to the current situation weall in. It came in 3 boxes on 2 days. (Just so you know what you'll be looking for) everything was packaged very secure in the boxes. I order the Cantilever with mine, so I had to swap out a couple parts. No big deal. Everything was explained in the instructions. It took me about 3 hours to install. The hardest part was getting the bed rails to align. I got them within 1/16th of an inch. Good enough.
The rack is a great addition to the truck. I stepped down from an 8ft bed to this 6ft 4in bed. So this was a necessity. The rack is solid. I'll be putting it to work right away


Great service and fast shipping and handling. Melissa T. Was very helpful finding answers to compatibility questions with other components. Site has great video reviews on their products. Definitely recommend them!… Best prices too.


We are a Ford dealership. This rack was ordered for a customer to give as a gift. It was installed here and customer was happy with the product.


Love this new rack. I upgraded from a cheap Amazon one. even more happy with support from etrailer. ive been trying to install in small windows of time with a lot goin on and made a few mistakes was helped everytime thanks Amy and angela


Nice rack! I've surely put to the test. My best this year was $3500 worth of azek of course with help from a couple 2x12x24 kd for the spread. Sketchy but did the job. Also carries all my staging, pix, ect... I'm happy with it.


Shipping was quick As described Easy to assemble. Wish the kit had one set of directions so I wouldn't have had to take the front rack apart after the fact. The final bolts for the canteleaver seem to be a damage/ scratch hazard.
Looks pretty slick though.


I purchased the front rack with the cantilever over hang, toolbox track kit and rear rack and locking knobs.
Very happy with the final product.


Great product, super easy install. No drill application is wonderful and fast so I can put it to work to pay for itself, less than 2 hr installation.


Perfect for my truck and what I needed. It's easy to take off the rack when not using it. It doesn't impede my roll-up tonneau cover. It's strong. I like the cab over as I load a long canoe on the rack and it protects the roof of my F350.


This has been one high quality truck rack. It went together reasonably well, has carried a variety of work and recreational loads for me around town and on the hwy. The design is very strong and flexible on my 6ft box and I love being able to slide rails forward or off based on access and truck load needs. It has also has very little road noise and fit reasonably well with my existing tanneau cover.

I had one tighten down knob break on impact (my fault and easily replaced at the hardware store) and my only product concern has to do with the sticky style leveling/mounting shims which have all but wiggled loose at this point. I will soon need to place some more permanent shims that can be anchored to the underside of the rails or on to my truck or something. It looks like I will have this for many more years.


All trucks made in the last 10 years have varying width beds. The installation instructions state that the sliding rail bases must be exactly the same width along the trucks bed rails. This is impossible to do without having them extend over the rear bed rails, and the front rails extending inside the bed rails. My Chevy truck has a 2" differential in bed width at the front and rear. TracRac needs to take these dimensions into consideration when designing the next version of the sliding rail kit. Instead of drilling a ton of holes in the rails at the factory, let us drill our own, so we can line up the rails as we see fit. It would also be nice if you would design the bottom of the inside-front rails to include a recessed notch for us guys that have roll n lock bed covers. Then we could set the rails on top of the roll-n-lock cover, thus allowing better rail alignment, down the truck rails.


I ordered, received and installed the trakrack ladder rack with cab extension. Etrailer I highly recommend as their service is excellent. I always buy from them. Since this product is aluminum, I did have a problem with some screws getting stripped but Etrailer fixed the problem. Once again excellent service. The ladder rack is sturdy and looks great. It is also light weight. It can be removed and adjusted to different lengths. It's a wow. I did add some bolts to the rails for my own confidence that it is bolted to the truck bed. Two it.


This Thule rack is one of only a few that fit the Tundra and it has worked out great for my needs, especially with the front extension piece. Installation was straight forward with no major issues doing it solo. A black anodized finish option to match the rails would be a nice feature to have available.

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