1. Truck Bed Bike Racks
  2. Thule
  3. Fork Mount
  4. Bolt On
  5. 9mm Axle
  6. 1 Bike
Thule Low-Rider Bike Block with 9 mm Skewer - Fork Mount

Thule Low-Rider Bike Block with 9 mm Skewer - Fork Mount

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Truck Bed Bike Racks

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TH821 - Compact Trucks,Mid Size Trucks,Full Size Trucks Thule Truck Bed Bike Racks
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This versatile fork block can be installed anywhere to create your own bike carrier. Includes 9-mm quick-release skewer. Lowest Prices for the best truck bed bike racks from Thule. Thule Low-Rider Bike Block with 9 mm Skewer - Fork Mount part number TH821 can be ordered online at etrailer.com or call 800-298-8924 for expert service.
  • All Info
  • Reviews (4)
  • Q & A (10)
  • Videos (3)
  • Photos
  • Why etrailer?

Thule Truck Bed Bike Racks

  • Fork Mount
  • Bolt On
  • Thule
  • 9mm Axle
  • 1 Bike
  • Locks Not Included
  • Compact Trucks
  • Mid Size Trucks
  • Full Size Trucks

This versatile fork block can be installed anywhere to create your own bike carrier. Includes 9-mm quick-release skewer.


  • Versatile block installs on almost any flat surface to provide fork mount for 1 bike
    • Replaces non-locking fork block on Thule Bed-Rider (TH822) - hardware not included
  • 9-mm Quick-release skewer secures your bike to the block
  • Built-in pass-through hole for securing your bike with cable lock (sold separately)
  • Heavy-duty, metal construction


  • Capacity: 1 bike
  • Application: most flat surfaces or Thule Bed-Rider (TH822)
  • Skewer diameter: 9 mm
  • Overall height: 2-1/4"
  • Limited lifetime warranty

821 Thule Low Rider Bike Fork-Mount Block with 9 mm Skewer

Item # TH821

This Product Fits The Following Vehicles

Video of Thule Low-Rider Bike Block with 9 mm Skewer - Fork Mount

Videos are provided as a guide only. Refer to manufacturer installation instructions and specs for complete information.

Video Transcript for Thule Low Rider Bike Block Review

Today we're going to be taking a look at the Thule low rider bike block, part number TH821. The Thule low rider bed block is a fantastic way to transport your bike in your truck bed or trailer. It uses a quick release 9mm skewer that allows for rapid loading and unloading. Though it only transports one bike, you can carry as many bikes as your truck bed or trailer can handle by picking up additional low rider blocks. It'll work with bikes that use standard or disc brake systems. The open design here at the center allows you to pass a cable lock through so you can further secure your bike. Thule makes one, and that's part number TH538XT. It secures with 4 screws, whereas most fork mounts only secure with 2, so it's going to be less vibration and more of a solid ride for our bike. It's made out of a heavy duty metal construction with a black finish, so it's going to resist rust and corrosion.

It also features a limited lifetime warranty. Now what we got are other features . I'll go ahead and show you how to get it installed. Now you can mount this anywhere in your truck bed or trailer. Up here at the bulkhead, down in your truck bed, or on one of the side rails. If you choose to have a less permanent solution, some people like to mount it to a cargo carrier or piece of wood in the back of truck, which is what we're going to do. We've got a 2x10 here, stretched to the width of our truck bed.

Let's go ahead and mount it right there. Either way, you will have to provide your own hardware. We're just using some heavy duty screws, as we'll we just going into the wood. If you're going to be mounting directly to your bed, I recommend using bolts and some flange mounts. A few things that you might want to know before you mount it is that the holes are a quarter inch in diameter, so you need to make sure that your hardware fits that. From center to center right here is an inch and a half apart.

From center to center here to here is 3 inches apart, so when choosing a location for your mount, you want to be sure that your handlebars won't interfere or come in contact with your cab or anything else that you might have up here toward the front. We're going to give our self enough room, so we're going to mount it right here. Once we've got it in position, let's go ahead and put it down. Once you've got one in, make sure that it's still straight, and then we can do the opposite side. Then we've got 2 more to put in on the backside and then we've got it. Now let's grab our skewer, so in order to get this installed, we'll have to remove the nut from the end. We can insert this in either side, whatever works for you.

We're going to go in through this side, because it'll be easiest for us, and once we've got it through, we can put the nut back on, and you want to be sure to leave enough room for the skewer to receive your forks on both sides. That looks pretty good. Let's go ahead and grab our bike. When bringing your bike in, you want to make sure and remove that front tire as our forks will be sitting on the skewer, so once we've got it off, let's go ahead and lower it down and set it in place. Now let's tighten it down. The idea is to be able to close your skewer up and have a nice, snug fir between your forks, so you can see where it's closed up there. We've still got a little bit of wiggle room, so what we want to do is we'll tighten it up. We can come over to this end and tighten up the nut and check it over time or if you choose to you can just hold the nut and then tighten it on this end. Either way works the same. You want to be careful not to over-tighten, because you could damage the forks. That seems pretty good. We'll close it up. As you can see, it's nice and solid. It's not going anywhere. Now with everything all loaded up, let's go ahead and take it out on our test course and see how it performs. Here on our test course, let's first go into our slalom. This is going to show side to side action, such as going around corners, or evasive maneuvering. Then on to our alternating speed bumps, this is going to show a twisting action, such as going over potholes or uneven pavement. Then finally onto our solid speed bumps, this is going to show an up an down action, such as pulling in and out of a driveway or out of a parking lot, and that's going to complete our look at the Thule low rider bike lock, part number TH821.

Customer Reviews

Thule Low-Rider Bike Block with 9 mm Skewer - Fork Mount - TH821

Average Customer Rating:  4.5 out of 5 stars   (4 Customer Reviews)

This versatile fork block can be installed anywhere to create your own bike carrier. Includes 9-mm quick-release skewer.

- TH821

My items were delivered in less than 48 hours. The customer follow-up by the staff at E-Trailer is excellent! Receiving personal e-mails to insure customer is satisfied is a class act! E-Trailer is my "go to" for my vehicle and trailer needs. 738597

- TH821

Someone had stolen my Thule bike rack piece that connects to my front fork, I Purchased a new one from each trailer it was delivered promptly at a good price it’s now been one year still working great 478195

- TH821XT

Review from a similar Low Rider in Truck Bed Bike Racks

Gr8 product exactly what I needed. Thank you. 161141

- TH821XT

Review from a similar Low Rider in Truck Bed Bike Racks

Top of the line fork mount. Very well made and nice that lock cylinders are included. Thule is a bit pricey, but you get what you pay for. 109403


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Info for this part was:

Expert Research:
Jameson C
Video Edited:
Jacob T
Video Edited:
Chris R
Installed by:
Cole B
Test Fit:
Hayden R
Updated by:
Sarah W
Updated by:
Matthew S

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