1. Accessories and Parts
  2. Malone
  3. Watersport Carriers
  4. Roof Mount Carrier Parts
  5. Adapters
Aero Style Crossbar T-Slot Fit Kit for Malone Kayak Carriers

Aero Style Crossbar T-Slot Fit Kit for Malone Kayak Carriers

Item # MPG6604
lowest price pledge
Our Price: $17.95
You Save: 20%
Accessories and Parts
Orders above $99 qualify for Free Shipping
Shipping Weight: 0.34 lbs
In Stock
zoom in icon
slider vertical icon
zoom out icon
Comment field cannot be left empty.
Name field cannot be left empty.

Thank you! Your comment has been submitted successfully. You should be able to view your question/comment here within a few days.

Error submitting comment. Please try again momentarily.

Product Images

This fit kit allows you to mount a Malone kayak or surfboard carrier to your roof rack crossbars with top channels. Electroplated hardware resists corrosion. Call 800-298-1624 to order Malone accessories and parts part number MPG6604 or order online at etrailer.com. Free expert support on all Malone products. Guaranteed Lowest Price and Fastest Shipping for Aero Style Crossbar T-Slot Fit Kit for Malone Kayak Carriers. Accessories and Parts reviews from real customers.
  • All Info
  • Reviews (7)
  • Q & A (27)
  • Photos
  • Why etrailer?

Malone Accessories and Parts - MPG6604

  • Watersport Carriers
  • Roof Mount Carrier Parts
  • Malone
  • Adapters

This fit kit allows you to mount a Malone kayak or surfboard carrier to your roof rack crossbars with top channels. Electroplated hardware resists corrosion.


  • Fit kit lets you mount a Malone kayak or surfboard carrier to crossbars with top channels
    • Works with: MPG114, MPG116, MPG117, and MPG118 (all sold separately)
    • Replaces clamp-on mounting hardware included with carrier
  • Channel nuts slide into crossbars' top channels and bolt to carrier
    • Perfect for vehicles with limited space between roof and crossbars
  • Electroplated hardware resists corrosion
  • Includes: 4 channel nuts, 4 M8 bolts, and 1 Allen wrench


  • Application: most crossbars with top channels
  • Bolt length: 1-7/16"
  • Limited lifetime warranty

MPG6604 Malone T-Slot Mounting Kit for Aero Style Bars

California residents: click here

Customer Reviews

Aero Style Crossbar T-Slot Fit Kit for Malone Kayak Carriers - MPG6604

Average Customer Rating:  5.0 out of 5 stars   (7 Customer Reviews)

This fit kit allows you to mount a Malone kayak or surfboard carrier to your roof rack crossbars with top channels. Electroplated hardware resists corrosion.

- MPG6604

I ordered these with the 50" cross bar and T-Slot install kit and they work great on my 2009 Forester. Only complaint is that they whistle pretty noticeably when you get up to speed. Love that they fold down. Cradles are super stable with 2 kayaks on top. So far very pleased and would recommend these for certain. Almost 3 months on back order but E-trailer folks were good about updating me on the status along the way and that was appreciated.

- MPG6604

- MPG6604

Worked great for my Malone Kayak rack!

- MPG6604

- MPG6604

- MPG6604

- MPG6604

Rack works exactly as I expected it to. Easy to install and easy to remove when Im not using it


Ask the Experts about this Malone Accessories and Parts

  • Kayak Carrier That Fits on Thule TracRac Crossbars
    I have a solution for you, and the reason you're having such trouble is that the crossbars on the Thule TracRac Ladder Racks, similar to the # TH43002XT-501, are slightly larger than normal crossbars that are used on roof racks. Because of this, you won't be able to use any kayak carriers that mount with clamps or U bolts around the bars. With that being said, you will be able to use the Aero Style Crossbar T-Slot Fit Kit # MPG6604 to mount the Malone J-Pro MPG116MD or J-Pro 2 # MPG117MD...
    view full answer...
    Image 1 for
  • How to Install T-Slot Fit Kit in Malone AirFlow2 Roof Rack Crossbars
    The rubber strips in the Malone AirFlow2 Roof Rack are supposed to accommodate the T-Slot Fit Kit # MPG6604 by pressing them down. It may be a little tight but they were designed this way to help limit the amount of wind noise that is heard when the wind passes over the crossbars.
    view full answer...
  • Can Malone Roof Rack Install in Top Channel of Volkswagen Crossbars
    The top channels of your Volkswagen roof rack are standard size so the Aero bar adapter part # MPG6604 that you referenced will easily fit into them and work with your Malone kayak rack.
    view full answer...
    Image 1 for
  • Will Malone DownLoader Fit Aero Crossbars on a 2014 Subaru Forester
    The Malone DownLoader Kayak Carrier with Tie-Downs # MPG114MD is designed to fit round, square, aero, elliptical, and most factory crossbars so it should fit the aero style crossbars on your 2014 Subaru Forester. The Malone AirFlow2 crossbars are 3" wide x 1" tall and the DownLoader will fit this so you can use these dimensions as a reference plus if you have the T-slots on your crossbars you can use the Fit Kit # MPG6604 and not have to worry about the clamps fitting at all. If you...
    view full answer...
    Image 1 for Image 2 for
  • Best Way to Carry Two Kayaks on 2019 Mazda CX-5 With Flush Side Rails
    We do have a solution for you, but for your 2019 Mazda CX-5, the issue isn't only actually the weight capacity of the roof, it is that there is no way to fit a combination of the Thule Hullavator Pro Kayak Carrier # TH898 with the Yakima ShowDown Kayak Carrier # Y04081 (or two of either carrier) on any roof rack for your 2019 CX-5 because they take up far too much space on your crossbars. Additionally, there isn't enough space on roof rack crossbars for a '19 CX-5 to fit both a Hullavator/ShowDown...
    view full answer...
    Image 1 for
  • Which Folding Kayak Carrier Will Fit The Thule Wingbar Evo Crossbars?
    We do in fact have several folding kayak carriers that will fit your Thule Wingbar Evo Crossbars on your 2013 Volvo XC90. I recommend looking into the Malone DownLoader Kayak Carrier with Tie-Downs - J-Style - Folding - Side Loading # MPG114MD. This is a folding carrier that will allow your roof to remain low-profile when no kayaks are on top of it; I attached a photo to show what this looks like in the folded down position. This carrier will simply clamp onto the Thule crossbars, but...
    view full answer...
    Image 1 for Image 2 for
  • Roof Rack and Two Load-Assist Kayak Carriers for 2020 Toyota 4Runner With Raised Side Rails
    While you can carry two kayaks on a roof rack of your 2020 Toyota 4Runner, there isn't enough available crossbar space for a pair of the Thule Hullavator Pro Kayak Carrier and Lift Assist # TH898. The reason for that is the recommended crossbar length for your '20 4Runner is 53 inches, which would be approximately even with the sides of your vehicle, and would need crossbars at least 76 inches for a pair of Hullavators, which would stick out so much the bars would be a legitimate danger...
    view full answer...
  • T-Bolt Fitting Compatibility with Malone AirFlow2 Roof Rack Crossbars
    Malone AirFlow roof racks like # MPG215 can use their own T-Slot Fit Kit # MPG6604 for Malone carriers or you can use another T-bolt fastener. I linked a photo showing a cross section of the AirFlow bar and the exact inside dimensions. I converted the millimeter dimensions to inches: 21.15mm = 0.83-inch 11.45mm = 0.45-inch 7.35mm = 0.28-inch This means the stainless steel T-bolts # 853-5648 will work fine. Most brands of T-bolt fittings and rack crossbars tend to be interchangeable...
    view full answer...
    Image 1 for
  • Recommended Length of Malone Roof Rack for 2014 Ford Escape to Carry Kayaks
    That's a great question and you've clearly put a lot of thought into it. And for your 2014 Ford Escape with raised rails I highly recommend the 58 inch Malone AirFlow2 Roof Rack # MPG216. The reason I recommend the longer bars is because they make kayaks much easier to load, particularly two kayaks, because they will be closer to the edge of your vehicle, so you don't have to try and contour your body to lift the kayaks up while bending to maneuver them on the roof. Longer crossbars...
    view full answer...
  • Comparing Malone J-Style Kayak Carriers
    You're correct the J-Pro2, part # MPG117MD, is a newer model of the J-Pro, part # MPG116MD. The difference between the two is the J-Pro2 has more padding to protect the kayaks. Other than that and the color they're basically the same. The J-Loader, part # MPG118MD, goes a little further to add the ramps which help with loading. You slide the kayak up and over the ramps helping to guide it in place instead of having to lift it over the ends of the carrier like with the J-Pro and J-Pro2....
    view full answer...
  • Mounting a Go Power Solar Panel to Roof Rack Crossbar T-Slot
    To mount the Go Power solar panel like # 34282182 to the Rhino-Rack crossbars you would need to adjust the crossbars to the correct width for your panel. Then you can use the Aero Style Crossbar T-Slot Fit Kit for Malone Kayak Carriers # MPG6604 or Crossbar Adapters for Rhino-Rack J-Style Kayak Carriers S510, S511, and S512 # KC-FK8 with the security tool to give you enough hardware for two of the solar panel brackets.
    view full answer...
  • Can I use Two Thule Hullavators # TH898 on 2018 Chevrolet Colorado Crew Cab?
    While the Thule WingBar Evo 53" Crosbars # TH711420 can fit two kayak carriers, you won't be able to use two of the Thule Hullavators # TH898. The Hullavators are 36" long, so you would need crossbars that are 72" long. Unfortunately, the longest crossbars available for your 2018 Chevrolet Colorado are only 55". Instead, I recommend using two of the Malone DownLoader Kayak Carriers # MPG114MD along with the Telos XL Load Assist # MPG351XL to help load your kayaks. For a roof rack,...
    view full answer...
  • Will Thule T-Bolts Fit Malone Aero Bars?
    The referenced Thule bolt is not the same as the Malone parts but I have what you need. Malone Aero Bars use their own style of T-Bolt Connectors sold in kits. Check out Malone # MPG915 for a 5/8ths inch bolts, or MPG6604 for a 1-7/16" bolts. I have attached links to these kits.
    view full answer...
  • Malone DownLoader Kayak Carrier Compatibility With Factory Crossbars On 2016 Jeep Cherokee
    Can you send me a picture of your Jeep's factory crossbars? Or if you can send the picture with the DownLoader on the bars showing how it doesn't fit. We haven't had the chance to install the carrier on a Cherokee yet so I'm not sure how well it fits on the factory bars.
    view full answer...
    Image 1 for Image 2 for
  • Best Way to Attach Malone Downloader Kayak Carrier to Thule Aeroblade Crossbars
    The best way to install the Malone Downloader part # MPG114MD on the Thule Aeroblade crossbars will be with the T-slot adapter part # MPG6604. This will give you the super solid connection point you are looking for.
    view full answer...
  • Will Malone T-Slot Mounting Kits Fit an ARB Awning Bracket
    Aero Crossbar T-Slot Mounting Kit # MPG915 is one of the kits that fit the Malone AirFlow 2 crossbars but it isn't the only one. There is also # MPG6604 which has longer bolts and a set of 4 of each part. There is also # MPG1498 with bolts that are in between the lengths of the other 2 kits. The bolts are not T-bolts. The way that it works is the square nuts slide into the T-Slot on a bar and the bolts will go down through the accessory being mounted and then thread into those square...
    view full answer...
  • How To Use Malone DownLoader On Thule Xsporter Pro Adjustable Height Truck Bed Ladder Rack
    In order to mount the Malone DownLoader Kayak Carrier part # MPG114MD on a Thule Xsporter Pro Adjustable Height Truck Bed Ladder Rack part # TH500XT, I recommend the Aero Style Crossbar T-Slot Fit Kit for Malone Kayak Carriers part # MPG6604.
    view full answer...
  • Recommended Two Kayak Lift-Assisted Roof Rack System for 2017 Mercedes GLS450 with Side Rails
    I recommend the Thule AeroBlade Edge Roof Rack - Aluminum # TH7503-TH7503 as a roof rack system for your kayaks. It's a great sturdy system, and the main perks of this roof rack is how low-profile and quiet it is so you can leave it and go about your normal daily routine. You won't have to worry about wind noise which can be a common issue with other roof racks. This also comes in Black # TH7503B-TH7503B and I attached a video so you can see the install process. For kayak racks, while...
    view full answer...
    Image 1 for
  • Thule Probars Compatibility with Channel Mounted Accessories
    We do not have a profile diagram, however the Thule ProBar 69" # TH713600 or 79" # TH713700 are designed to have channels like the aerobars and will fit the same accessories because the channels are the same. The biggest benefit to the ProBar is the channel underneath runs the entire distance of the bar so they can be trimmed to any desired length and they also have a second channel with the same dimensions as the top channel for more accessories. Basically any accessory that fits...
    view full answer...
    Image 1 for
  • Adapter to Fit Malone DownLoader to Rhino Rack Crossbar Top Channels
    For the Malone Downloader kayak carrier part # MPG114MD the hardware kit you'd need to fit it to a Rhino Rack top channel would be the part # MPG6604. The MegaWing does not have a similar adapter for it.
    view full answer...
  • Does the Malone DownLoader Fit Thule WingBar Evo Crossbars
    I am happy to inform you that the Malone DownLoader Kayak Carrier, part # MPG114MD, is compatible with Thule WingBar Evo crossbars. If you'd like to use the T-slots on your WingBar Evos, you use the Aero Style Crossbar T-Slot Fit Kit for Malone Kayak Carriers, part # MPG6604.
    view full answer...
  • Will Malone J-Pro2 Kayak Carrier Work With Channels on TracRac Ladder Rack
    The Malone J-Pro2 Kayak Carrier with Tie-Downs part # MPG117MD can be used with TracRac Ladder Racks when you use part # MPG6604 (Thule TracRac *New) or part # MPG8287 (TracRac *Old).
    view full answer...
  • Is the Yakima BoatLoader EVO Telescoping Only Compatible with Yakima Crossbars?
    The Yakima BoatLoader EVO Telescoping Load Assist - 28" Extension # Y04085 is compatible with only Yakima Corebar or Roundbar roof rack systems. If you are looking for a boat loader that is compatible with the Aero Malone Airflow 2 Crossbars # MPG216, I recommend the Malone DownLoader Kayak Carrier and TelosXL Load Assist w/ Tie-Downs # MPG114MD-351XL. You will need to purchase a Aero Style Crossbar T-Slot Fit Kit for Malone Kayak Carriers # MPG6604 for the carrier to fit in the T-Slots...
    view full answer...
  • Best Assisted Kayak Carrier Recommendation for Jeep Grand Cherokee with Thule Crossbars
    Since your Thule aero bar style of crossbars have top channels you will want to use the adapter part # MPG6604 with the Malone DownLoader Kayak Carrier and TelosXL Load Assist w/ Tie-Downs # MPG114MD-351XL that you referenced. If you are thinking about this carrier I would recommend considering the Thule Hullavator part # TH898 for an easier to use and more helpful assisted kayak carrier. This uses gas shocks to help load the kayaks and you'll be much happier with it over the Malone....
    view full answer...
  • Can I Use the Thule Replacement Square T-Bolt for Thule Xadapt12 on an Awning with Thule Crossbars
    I reached out to Thule and the # 853208914 does not have a weight capacity they've tested it at, but it's not truly going to be weight bearing a lot of weight, so it would be an acceptable solution to mount the Batwing to your Thule crossbars. This bolt is an M6 x 22mm bolt, so you'll need a 10mm nut, as well. You also may be able to use the Aero Style Crossbar T-Slot Fit Kit for Malone Kayak Carriers # MPG6604, which comes with bolts and track nuts.
    view full answer...
  • Can Two Thule Hullavator Pro Kayak Carriers Be Mounted On A 2015 Subaru Forester Roof?
    The Thule Hullavator Pro - Lift Assist Kayak Carrier # TH898 requires about 28-1/2" of crossbar space and also requires the crossbars to overhang at least 4" on each side. Aside from that, the Hullavator weighs 40lbs each. It is not recommended to try and use two Hullavators on one roof. I recommend using one Hullavator for one kayak, and then for the other kayak use the Malone DownLoader Kayak Carrier with Tie-Downs - J-Style - Folding - Side Loading # MPG114MD. The Malone DownLoader...
    view full answer...
  • Will the Rola Rail Extreme DFE Work with a Malone DownLoader on a 2019 Ram 2500 Tradesman
    Yes. The Rola Rail Extreme DFE # R5008 will fit on your 2019 Ram 2500 Tradesman and the Rola Lock Cores # 59315 are a great way to secure the rack to your truck. The Malone DownLoader # MPG114MD-351XL will also fit on these bars with the clamps or by using the optional T-Slot hardware kit # MPG6604 (available separately). All of these parts will work together and give you a nice setup for carrying kayaks. I've linked some review videos of these parts for you to check out, as well.
    view full answer...

Do you have a question about this Accessories and Part?

  • Why etrailer.com?

    At etrailer.com we guarantee:
  • Highest quality accessories and parts for the best price.

    Our Lowest Price Pledge ensures you will never overpay for the parts you need.
  • Real product know-how.

    We make sure that the products we sell are what we say they are, and that they work the way they are supposed to work. Get real advice from a real person who has the knowledge and expertise needed to solve your problem.
  • Most detailed, accurate accessories and part information available.

    Because we take providing accurate product information seriously, we take our own detailed product photos, demo videos and installation videos, as well as verify measurements, instructions, and vehicle fit information.
  • Installations, made easy.

    We love helping people and have the most highly-trained customer service, hands-on experience, step by step videos and installation instructions.
  • Fast shipping.

    Your order is automatically routed to get out of our warehouse and to your door as quickly as possible. Receive free shipping on orders over $99.
  • Personalized service for life.

    We provide one-on-one, personalized service from the ordering process through the life of your product.
  • Trusted since 1946.

    We've been serving customers since our parts store first opened in 1946 and continue to be recognized by our customers, our vendors and third parties for exceptional service.
  • Returns Policy

    Need to return an item? No problem. Please read our Returns Policy for more information.

Info for this part was:

Employee Jameson C
Expert Research:
Jameson C
Employee Sarah W
Updated by:
Sarah W
Employee Jessie B
Updated by:
Jessie B
Employee Isabelle B
Updated by:
Isabelle B
Employee Jonathan S
Written by:
Jonathan S

At etrailer.com we provide the best information available about the products we sell. We take the quality of our information seriously so that you can get the right part the first time. Let us know if anything is missing or if you have any questions.