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Base Rails for Thule TracRac SR Sliding Truck Bed Ladder Racks
Thule

Base Rails for Thule TracRac SR Sliding Truck Bed Ladder Racks

Part Number: TH21508
In Stock
$549.95
Retail:$693.46
You Save: $143.51
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Customized base rails are specially designed to fit your vehicle. Required to mount your Thule TracRac SR truck rack, these base rails feature 2 separate tracks so that you can easily adjust the rack along the full length of your bed. 1-800-940-8924 to order Thule accessories and parts part number TH21508 or order online at etrailer.com. Free expert support on all Thule products. Great prices and Fastest Shipping for Base Rails for Thule TracRac SR Sliding Truck Bed Ladder Racks. Accessories and Parts reviews from real customers.
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Thule Accessories and Parts - TH21508

  • Ladder Racks
  • Ladder Rack Base Rails
  • Thule

Customized base rails are specially designed to fit your vehicle. Required to mount your Thule TracRac SR truck rack, these base rails feature 2 separate tracks so that you can easily adjust the rack along the full length of your bed.


Features:

  • Custom-fit base rails are required for installation of your Thule TracRac SR or Thule TracRac G2 sliding ladder rack (sold separately)
    • Rack mounts on and slides along 2 tracks
    • Rails run the length of your truck bed for maximum adjustability
  • Simple, stake-pocket mounting
    • No drilling required
    • Rubber expansion blocks and necessary hardware included
  • Black anodized aluminum resists rust and stands up to abuse
  • Made in the USA
  • Limited lifetime warranty


Thule TracRac Base Rails

These unique base rails provide the foundation for Thule TracRac's customizable truck bed ladder rack 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.


Thule 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.


Thule 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 along the rails for optimal placement and are secured in place with the turn of a knob.



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

Replaces TracRac TA21508

Installation Details TH21508 Installation instructions


California residents: click here


Customer Satisfaction Score:

Ratings & Reviews

5.0

2 reviews
Customized base rails are specially designed to fit your vehicle. Required to mount your Thule TracRac SR truck rack, these base rails feature 2 separate tracks so that you can easily adjust the rack along the full length of your bed.

by:



by:


2
2

See what our Experts say about this Thule Accessories and Parts

  • Are there 5-1/2" Long Base Rails for a Thule TracRac SR Sliding Truck Bed Ladder Rack?
    They sure do Lou. For just the 5-1/2' rails for a 2025 Ford F-150, you'll want the Base Rails for Thule TracRac SR Sliding Truck Bed Ladder Racks item # TH21508. This kit only includes the rails and mounting hardware. They measure 65.6" long x 4" wide x 1.9" tall. If you're looking for the entire setup you'll need the Thule TracRac SR Sliding Truck Bed Ladder Rack item # TH43002XT-508. This is the one Thule recommends for the 2025 Ford F-150 with the 5-1/2" long bed. Do you already...
    view full answer...
  • Will The TH21608 Fit My Ford F-150 Super Crew?
    Hey Paul, The Thule Track Rack Base Rails # TH21608 are going to be for the GMC pick up trucks. For your Ford F-150 Super Crew you are going to want to go with # TH21508. Those Thule Track Rack Base Rails are for the Ford Super Crew Pickups. Which Thule ladder rack do you currently have?
    view full answer...
  • Recommended TracRac Sliding Truck Bed Ladder Rack for 2017 Ford F-150 with 5-1/2 Foot Bed
    For your 2017 Ford F-150 with 5-1/2 foot bed, you need the TracRac SR Sliding Truck Bed Ladder Rack - Full Size Pickup Trucks - 1,250 lbs # TH43002XT-508 which is a confirmed fit. The Base Rails for TracRac SR Sliding Truck Bed Ladder Racks # TH21508 are what you need if you just want the rails and hardware.
    view full answer...
  • Does Thule Xsport Pro Shift Fit 2018 Ford F-150 With 5-1/2 Foot Bed
    Hey Liam, It sure does! You'll just need to add the base rails to get the Pro Shift installed on your 2018 Ford F-150 with a 5-1/2 foot bed. So here are the parts you need for your truck: - Thule Xsporter Pro Shift Overland Truck Bed Rack # TH54RR - Base Rails for Thule TracRac SR Sliding Truck Bed Ladder Racks # TH21508 While the title of the rails says they are for "SR Sliding Truck Bed Ladder Racks" I did verify directly with Thule that these rails are exactly what your F-150 needs...
    view full answer...
  • Will the Thule TracRac Base Rails Fit with the Xsporter # TH54RR and the X4s # BAK56ZR?
    I have the parts that work for you! I confirmed with Thule that the TracRac Base rails # TH21610 will not fit your 5-foot 6-inch bed on your 2021 Ford F-150. The correct TracRac Base Rails you need is the # TH21508. Since these base rails install directly into the stake pockets, you leave the bed rails open to install the BAK Revolver X4s Hard Tonneau Cover # BAK56ZR. As far as the Xsporter Pro Shift # TH54RR, that rack fits with the base rails # TH21508 on your truck. The only thing...
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  • How Are the Thule TracRac SR Base Rails Mounted
    The base rails on the Thule TracRac SR # TH43002XT-508 install via the stake pockets with a bolt, rubber block and t-plate. This hardware included with the Base Rails # TH21508, and if you check out the video that I've included linked to this answer it gives you a decent idea of how everything mounts. You'll want to forward to around the 6:15 mark in the video where Ryan talks about the installation of the rails. I've also linked both sets of instructions for the TracRac SR that you can...
    view full answer...
  • Moving Thule TracRac SR From 2010 Toyota Tundra to 2022 Ford F-150
    In order to move your Thule TracRac SR over to your 2022 Ford F-150 you're going to need a different set of rails. The rails on your 2010 Tundra are not compatible with the F-150. You will need one of the following based on your bed length: -Base Rails for Thule TracRac SR Sliding Truck Bed Ladder Racks # TH21508 (5-1/2' bed) -Base Rails for Thule TracRac SR Sliding Truck Bed Ladder Racks # TH21501 (6-1/2' bed) -Base Rails for Thule TracRac SR Sliding Truck Bed Ladder Racks # TH21000...
    view full answer...
  • Does Thule Make Crossbars That Fit Into the Base Rails for the Thule TracRac
    Hey Steve, from what I can gather Thule does not make any crossbars that works directly with the Base Rails for Thule TracRac SR Sliding Truck Bed Ladder Racks # TH21508. The base rails are designed specifically to be used with the Thule TracRac SR Sliding Truck Bed Ladder Rack # TH43002XT-508, so regular crossbars that fit into t-tracks won't work because the slot in the base rails is too wide. Your best bet is to either put your box on the crossbars on the ladder rack or put it in...
    view full answer...
  • Replacement End Cap for TracRac SR Base Rails
    Yes, the correct replacement end cap for the TracRac SR Base Rails like part # TH21508 for example is the Replacement End Cap for TracRac SR Base Rails part # THPI-11014-1.
    view full answer...
  • Correct Base Rails for Thule TracRac SR on 2022 Ford F-150 Short Bed
    I'm assuming you have the 5-1/2' bed on your 2022 F-150 since that is what you put in our guide. If that is the case, the correct rails are the # TH21508. If you meant the 6-1/2' bed then you need the # TH21501.
    view full answer...
  • Tonneau Cover for 2015 Ford F-150 Short Bed Compatible with Thule TracRac SR Ladder Rack
    The # TH21508 rail you'd looked at is a component of the Thule # TH43002XT-508 TrackRac SR Ladder Rack. The Thule TracRac SR is compatible with tonneau covers that leave the top of the bed side exposed, which is important because the ladder rack attaches to the vehicle via the stake pockets. You'll need a tonneau that attaches to the inside edge of the bed sides, not the top. The BAKflip # BAK126329 folding hard tonneau cover would be a good choice. If you'd be more interested in something...
    view full answer...
  • Does the Base Rails Come with the Thule TracRac SR Sliding Ladder Rack # TH43002XT-508?
    The base rails that are designed to fit the 2018 Fort F-150 (5-1/2 foot bed) - Ford Super Crew Trucks # TH21508 come with the Thule TracRac SR Sliding Truck Bed Ladder Rack - 1,250 lbs # TH43002XT-508. The Base Rails for Thule TracRac SR Sliding Truck Bed Ladder Racks # TH21610 are designed to fit only Short Bed Toyota Tundra Trucks only.
    view full answer...
  • Which Thule Sliding Ladder Rack Base Rails fit 2013 Ford F-150 5.5 ft Bed
    The base rails for the TracRac sliding ladder racks are bed length and vehicle manufacturer specific for the most part with a few part number changes as the trucks change generations. So for your 2013 Ford F-160 with a 5-1/2 foot bed the base rails you'd need are # TH21508.
    view full answer...
  • Compatible Thule TracRac Ladder Rack for 2019 Ford F-150
    There are two types of TracRacs that are compatible with your 2019 Ford F-150. There is the fixed mount Thule TracRac TracONE # TH27000XT or the Thule TracRac SR Sliding Rack # TH43002XT-508. The Thule TracRac SR Sliding Rack # TH43002XT-508 has a lot more adjustability and weight capacity and it also uses bed-specific base rails to allow the ladder rack to slide back and forth. If these base rails are the ones you are looking for, then the # TH43002XT-508 is the full kit that is compatible...
    view full answer...
  • Correct Base Rails for Thule TracRac SR Sliding Truck Bed Ladder Racks for 2015 Ford F-150 6.5' Bed
    The correct base rails for the Thule TracRac SR Sliding Truck Bed Ladder Rack for Full-Size Pickups - 1,250 lbs # TH43002XT for your 2015 Ford F-150 Crew Cab with 6-1/2' Bed is the Base Rails for Thule TracRac SR Sliding Truck Bed Ladder Racks # TH21501. This kit will contain everything you need to install the base rails.
    view full answer...
  • Replacement Base Rails for 2022 Ford F-150 Lighting for TracRac SR Ladder Rack
    I checked with Thule and the correct TracRac SR ladder rack base rails for your 2022 Ford F-150 Lightning is the part # TH21508.
    view full answer...
  • Which TracRac Ladder Rack Rail Fits 2013 Ford F-150 5-1/2 ft Bed
    The correct TracRac Rail Kit for a 2013 Ford F-150 5-1/2 foot truck bed would be the part # TH21508. The uprights of a TracRac that fit a Ford F-350 would be same. The complete kit for the F-150 though would be the part # TH43002XT-508.
    view full answer...
  • Sliding Ladder Rack and Tonneau Cover that Fits 2016 Ram 1500 5-1/2 ft Bed
    For your 2016 Ram 1500 Rebel with a 5-1/2 foot bed you'd need to go with a different tonneau setup on your truck to install a Thule TracRac sliding ladder rack since your Switchblade covers the stake pocket openings. Instead you'd want to go with a Bak Revolver X2 part # BAK39207 which would give you access then you'd be able to install a sliding TracRac like the # TH43003XT-784 and you'd be set.
    view full answer...
  • TracRac Sliding Ladder Rack With Tonneau Cover on 2018 Chevy Silverado
    If your cover mounts to the inside of the bed rails and not on top it shouldn't interfere, however I have not tested this exact combination so I can't confirm if it will work. The main thing that will cause any kind of interference is if the cover is mounted to the outside, or top of the bed rails. The Thule TracRac does use base rails that mount to the truck's bed rails, and provides a T-track or channel for the uprights to slide back and fourth on. The complete system is rated for 1,250...
    view full answer...

Do you have a question about this Accessories and Part?


Info for this part was:

Employee Mike L
Expert Research:
Mike L
Employee Jameson C
Expert Research:
Jameson C
Employee Tyler C
Edited by:
Tyler C
Employee Steven C
Installed by:
Steven C
Employee Wilson B
Updated by:
Wilson B
Employee Matthew S
Written by:
Matthew S

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