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  1. Ladder Racks
  2. Thule
  3. Over the Cab
  4. Truck Bed
  5. 1200 lbs
  6. No Drilling Required
Thule TracRac SR Sliding Truck Bed Ladder Rack w/ Cantilever - 1,250 lbs
Thule

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

Part Number: TH43001XT-603EX
In Stock
$2,049.85
Ladder Racks

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In Use/Installed

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 TH43001XT-603EX by Thule online at etrailer.com.
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Thule Ladder Racks - TH43001XT-603EX

Highlights

  • Custom Fit for Your Vehicle: Installs with hardware that attaches to your truck's bed rails or stake pockets
  • Handles Long Loads: Over-cab cantilever adds 32" of support for lumber, ladders, and pipes.
  • Slides for Access: Rack moves along T-track base rails for full bed access when needed.
  • Strong Capacity: Carries up to 1,250 lbs; cantilever supports 1,000 lbs.
  • Easy No-Drill Mounting: Installs in stake pockets—secure fit without extra holes.
  • Rustproof Aluminum Build: 6000-series aluminum with dual powder coat resists wear and corrosion.
Made in USA

Features to know about

Handles Long Loads with Ease: Over-Cab Cantilever Support

The built-in cantilever extension gives you 32" of extra rack length that reaches over the cab. That extra space makes hauling long boards, ladders, or conduit simple and secure. The cantilever is built from the same 6000-series aluminum as the rest of the rack, so it carries up to 1,000 lbs and matches the same streamlined, aerodynamic design.

Thule TracRac SR cantilever extension extending over a truck cab, providing additional support for long cargo loads.

Keeps Gear Secure but Easy to Access: Sliding T-Track System

The rack uprights slide the full length of your truck bed on integrated T-track base rails. You can move the bars together for better aerodynamics and bed access or spread them apart for longer cargo. Quick-release clamping knobs make repositioning fast—just loosen, slide, and tighten. When you need the bed clear, the whole rack lifts off the tracks in minutes.

Thule TracRac SR sliding ladder rack system with both crossbar sections moved together for compact storage and improved aerodynamics.

Strong, Light, and Rustproof: 6000-Series Aluminum Construction

Every piece—from the base rails to the crossbars—is made from lightweight, rustproof aluminum. The internal web structure adds strength without extra weight, and the dual-stage powder coat finish (an e-coat followed by a clear coat) protects against corrosion, scratches, and scuffs. With a carrying capacity of 1,250 lbs, you get the strength of a work rack without the heavy steel drawbacks.

Quiet Ride and Clean Look: Aerodynamic Crossbars with Airfoil Strips

Elliptical crossbars minimize drag and noise while you drive. Built-in airfoil trip strips prevent wind from whistling through the bar slots, keeping your ride quiet and more fuel-efficient. The smooth, low-profile shape also gives the rack a neat, finished look that stays clean after miles on the road.

Ready for Real Workloads: Load Stops and Side Cleats Included

The rack comes with 4 heavy-duty aluminum load stops that slide in the crossbar channels to hold cargo in place. Each has a built-in loop for straps, and they lock down with a twist of the knob. Four side cleats mount on the uprights for extra tie-down points, giving you multiple ways to secure anything from ladders to lumber.

Thule TracRac SR aluminum load stop accessories mounted on crossbars to hold ladders and cargo securely in place.

Thule TracRac SR side cleats mounted on ladder rack uprights, providing extra tie-down points for securing cargo.

Specs

Weight and Capacity

  • Carrying capacity: 1,250 lbs
  • Capacity of cantilever extension: 1,000 lbs

Dimensions

  • Crossbar length: 65"
  • Rack height (with base rails): 25-3/16"

Warranty

  • Limited lifetime warranty

43001 Thule Track Rack SR Sliding, Truck Bed Rack

21603 Thule Track Rack Base Rails - Nissan Crew Cab Trucks

24001 Thule Track Rack Cantilever Over-the-Cab Extension - Compact

Replaces TracRac TA21603-01-01

Installation Details TH43001XT-603EX Installation instructionsAlternate Instructions TH43001XT-603EX Installation instructions

This Product Fits The Following Vehicles




Ratings & Reviews

4.7

91 reviews
Review sort icon
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.

by:

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.



by:

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.



by:

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.



by:

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.



by:

Great transaction and shipping was earl y.



by:

Its an excellent rack system. The only complaint I have that keeps it from 5 stars is the knobs to lock the slides in place are difficult to use due to the shape, I'd prefer a wind nut style for leverage and the hardware corroded substantially within 6 months and everything had to be removed and cleaned and reinstalled with antisieze to keep everything operational. Other than that it is an awesome set up and gets the job done.



by:

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.



by:

Does the trick. Benefits from occasional tightening and adjustment. The sliding vertical brackets on top are finicky. Very handy attachment points for bungees and straps.



by:

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.



by:

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.



by:

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.
Thanks.



by:

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.



by:

The product was super easy to install and it’s very stout even though it’s technically a ladder rack. I am in the water well business and use it for hauling my pipe galvanized, PVC you name it. I did have a little issue with two of the uprights but nothing that couldn’t stop me from installing it, I reached out to the support team and Joshua B was extremely helpful. They sent out replacement parts with a few days to make it right with me. I greatly appreciate all of their help.



by:

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



by:

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.



by:

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.



by:

Great system
Fast shipping very res
ponsive



by:

Love it! kayaks, ladders anything too long to fit in a five and three-quarter bed go on the ladder rack. It slides out of the way when I have big bulky things like refrigerator to put in the back of the truck. And I got to keep the tonneau cover that came with the truck.



by:

I just received the Thule rack, so have not installed them yet. The service from etrailer was outstanding!



by:

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 etrailer.com for all my vehicle needs.



by:

Good quality material.
Fast shippi
ng



by:

The parts came in on time and Lauren stayed in contact with me throughout the whole process. She is incredible at what she does and my racks look great and function perfectly for my construction needs! Thanks etrailer!



by:

The movable rack let's it be mostly out of the way when not in use without removing from truck. The high load rating plus cantilever let's me haul long semi flexible objects (the flexing puts a significant strain on the rack)even with a shorter bed.



by:

The ladder rack is awesome +
It took
3 times to get the right parts -
Special thank you to Tiffini S. from customer support center, she was very professional and helpfull.



by:

Great rack! Very flexible design.


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See what our Experts say about this Thule Ladder Racks

  • Cantilever Ladder Rack for a 2017 Nissan Frontier w/ a 5 Foot Bed and Track System
    For your 2017 Nissan Frontier you are going to want the Thule TracRac SR Sliding Truck Bed Ladder Rack w/ Cantilever item # TH43001XT-603EX. This rack is confirmed to fit the Crew Cab model with the 5' foot bed and Utili-Track System. This rack has the requested cantilever addition that will go over the top of your cab. It is made of lightweight aluminum and then powder coated for extra protection. This system has a 1,250 lbs capacity which is reduced to 1,000 lbs only on the portion over...
    view full answer...
  • Truck Bed Roof Rack System For A 2012 Nissan Frontier
    The best solution that you have on your 2012 Nissan Frontier is # # Y01152-5868, but you will have to remove your tonneau cover. All ladder racks need to sit on the inside of the rails of the bed of your truck besides the Thule TracRac SR # TH43001XT-603EX which may interfere with your tonneau cover if it sits on the top of your bed rails. If you have a roll up tonneau cover that sits on the inside of your rails like this one # BAK38ZR you could use the TracRac SR, but it is at the height...
    view full answer...
  • Is There A Ladder Rack W/ Cantilever That Fits My 2022 Toyota Tundra
    I do have a ladder rack option for you with a cantilever, but it will not be the Thule TracRac SR, part # TH43001XT-603EX. In fact, Thule does not offer a fit for your 2022 Toyota Tundra. The Erickson Over-The-Cab Truck Bed Ladder Rack - Steel - 1,000 lbs, part # EM07707, will fit your vehicle. It has a maximum weight limit of 1,000 lb. I have included a product description link and a video review link below.
    view full answer...
  • Ladder Rack Compatible & BAK Revolver Tonneau Cover on a 2014 Nissan Frontier with 5 Bed
    We do have a ladder rack that will fit your 2014 Nissan Frontier 5' bed with the BAK Revolver X2 Tonneau Cover # BAK39506. Since your tonneau cover mounts inside the bed rails you can use the Thule TracRac SR # TH43001XT-603 or # TH43001XT-603EX (with the over-the-cab extension) as it mounts on top of the bed rails. The TracRac SR is one of the best ladder racks that we have to offer. It has a weight rating of 1,250 lbs and installs on rails which allow you to move the crossbars to varying...
    view full answer...
  • Ladder Rack Fits for 2008 Nissan Frontier Crew Cab 5-foot Bed and Utili-Track System
    We have several choices in a ladder rack for your 2008 Nissan Frontier Crew Cab with 5-foot bed and the Utili-Track system and these include racks from Erickson. You can see all of these on the linked page. The particular rack model # EM07706 that you referenced does not fit your model year truck but you can use Erickson aluminum rack # EM07705 (shown in the linked video) or their black rack with cab extension # EM07707. Both of these are rated for 800-lbs. If you want the highest weight...
    view full answer...
  • Best BAK Tonneau Cover and TracRac Ladder Rack Combination on 2016 Nissan Frontier
    The TracRac SR # TH43001XT-600 you mentioned will not fit the 5 foot bed 2016 Nissan Frontier, it's for the 6 foot bed. For the 5 foot bed you'll need # TH43001XT-603EX. The TracRac SR is not likely a fit with the BAKFlip F1 BAK72506 for a couple of reasons. For one when opening the panels of the BAKFlip you will most likely come into contact with the uprights of the TracRac. It's possible you could slide the ladder rack to avoid this. Another problem is that the tracks of the TracRac...
    view full answer...

Do you have a question about this Ladder Rack?


Info for this part was:

Employee Tyler C
Edited by:
Tyler C
Employee Dustin K
Video by:
Dustin K
Employee Chris R
Video Edited:
Chris R
Employee Wilson B
Updated by:
Wilson B
Employee Alex H
Updated by:
Alex H
Employee Matthew S
Written by:
Matthew S
Employee David F
Installed by:
David F

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