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

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

Item # MPG6604
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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. 1-800-940-8924 to order Malone accessories and parts part number MPG6604 or order online at 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.
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  • Reviews (16)
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Malone Accessories and Parts - MPG6604

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

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, and MPG117 (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"
  • Nut dimensions: 1" long x 13/16" wide x 3/16" tall
  • Limited lifetime warranty

MPG6604 Malone T-Slot Mounting Kit for Aero Style Bars

California residents: click here

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

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

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

Hi, everyone, it's Evangeline right here at etrailer. And today, we're taking a look at our Malone aero-style crossbar T-slot hardware kit, for your Malone kayak carriers, right here at etrailer. So, this is a hardware kit designed to work with your Malone kayak carrier. So I have our Malone Downloader right here, and I have the original hardware, which is a clamp that goes around your crossbars. But on the other side, I have the T-slot kit. So some reasons you might want to upgrade to this is, let's say you want to maximize your crossbar space.

You want to bring your kayak here out to the edge of your crossbar. In our case, if we have a tower we can't do so because that clamp goes behind the tower. But with the T-slot kit, we can bring this a little bit further out, making it easier to load and unload your kayaks. Also, if you have an extra large crossbar, maybe your hardware isn't long enough to fit around that crossbar, that's where the T-slot kit goes. I also personally think that it's easier to install since, instead of wing nuts, where you have to figure out the right balance on each side of your kayak carrier, this one, you just slide into your T-tracks, line it up to where you want it to go and use this hex tool to tighten it down.

Maybe the hardest part is just keeping track of your hex tool though, and making sure that you don't lose it. So notice how further out we brought our kayak carrier. This is especially useful if you have limited clearance over to the side of your vehicle and you need it further out so you can lift your kayak up. So with this, we can bring this all the way to the end of our crossbar and not be limited by where our tower is. So this comes as a set of four or a set of eight, and that depends on your kayak carrier.

So if you have a J-style kayak carrier like this, you'll usually just need the set a four because you get two for each carrier piece. Now, if you have, let's say, the Saddle Up Pro, or some of the saddle-style kayak carriers, which come as kind of like four pieces, then you'll need the set of eight to install this. So if you check out our product page for these adapter pieces, you can see which kind of kayak carriers this is compatible with. As for the install process, it's very simple. All you need is this hex tool, which comes with the kit.

So let's take a look at that process. So for the install process, you're gonna have your kayak carrier, and your kayak carrier's going to include the hardware to tighten it down onto your crossbars. Now, what you're doing here, is replacing that hardware with your T-track hardware. So you're gonna take off the old ones, and those will usually just have these wing nuts, as well as that plate that goes underneath. So just loosen that and take it that off. So notice how those we're kind of, like, vertical, where it goes from side to side, and what you want to do is replace it to a horizontal mounting style. So take those bolts out, and then get your hardware that's included with this kit. So in our case, that's going to be two of these. So one, two, and you have a bolt, a flat washer, and then your T-panel plate. So this is the Malone Downloader, so you only need the set that has four, because one, two for each kayak carrier. Now for the other Malone kayak carriers, like the Saddle Up Pro, you're gonna need the set that needs eight of these bolts. So get the bolts for your kayak carrier and then insert them horizontally. In the Malone Downloader, we're gonna come in from the top and one, two, get your bolts and pop them through. That's the bolt and the flat washer. Now holding onto your bolts from the top, you're gonna get your T-track plates and lightly screw them onto those bolts. Just very lightly, because you don't want too much clearance where it won't fit into your crossbars. Now get your kayak carrier, line those plates up to the T-channel on your crossbars, depending on your crossbars, you may need to push down the rubber strips or take off the end cap, but just slide those through. So you have this hex key included with your kit, and that's going to be used to tighten down your T-track bolts. So just tighten these down and they'll tighten the plate on the bottom. So once both bolts are tightened down, you can see that our kayak carrier is now secure onto our crossbar, and that's really all there is to the install of these adapters. So my final thoughts about this T-slot adapter kit is it's definitely an upgrade to the current clamps that you get with your kayak carriers. Aero bars are honestly a bit more modern compared to a traditional square or round bars. So in the old days, not every crossbar had those channels. So it's really nice to see how there's the ability to upgrade your older kayak carriers to accommodate those modern bars. Also notice how we're able to bring our kayak carrier out, making it easier to load and unload your kayaks, and you get more out of your crossbar space. This gives you more space to add even more accessories to your roof rack. So all in all, it's definitely worth checking out or adding to your current kayak carriers. This was a look at the T-slot adapter kit for your Malone kayak carriers, right here at etrailer..

Customer Reviews

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

Average Customer Rating:  4.8 out of 5 stars   (16 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.


These slot adapters fit perfectly on my Hyundai rack and were much more solid than the stock kit. I felt more secure on my four-hour-long road trip. I watched many eTrailer videos to discover the right products to help make my kayaking trips more enjoyable. Thank you eTrailer!


These work well & do the job properly. I'm a lot more comfortable using my JPro2s with these than without them.

It's VERY dumb that these aren't included when purchasing a Malone Roof Rack or Malone JPro2s. It's another way to charge extra for a necessary part.


This kit is convenient and works exactly as advertised. E-Trailer provided excellent communication and follow-up. The 5th star was withheld because of Malone, not E-Trailer. At the price of the Malone carriers, it should really have been included with the original packaging and not sold as an accessory. Components are high quality except that the square nuts could have been stainless steel or aluminum for better rust prevention.


never used with carrying a kayak as I switched my carrier from T-slot. were hard to push through the T-slot and started to rip some of the rubber strip. not much bolt beyond the square piece. All may have been okay but I never used it to hold kayak and kayak carrier on the aero crossbar.


I have ordered from etrailer before and have always received my order quickly. After this order, I quickly placed another. With etrailer it is never hard to find what I am looking for, then I normally receive it quickly.


Great customer service! Reached out to ask about correct product and was contacted within 48 hrs. Product arrived promptly.


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.


Worked great for my Malone Kayak rack!


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

  • 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...
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  • 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...
  • 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...
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  • 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 DownLoader Kayak Carrier Fit 2022 Subaru Outback With Subaru Thule Crossbars?
    The Malone DownLoader Kayak Carrier with Tie-Downs - J-Style # MPG114MD should fit your Subaru/Thule crossbars without an issue. But to verify, this carrier fits the Malone crossbars which measure 3-1/16" wide and 1" tall so if your crossbars are within these specs then it will fit for sure. If the crossbars on your Subaru happen to be larger then you can simply use T-Slot Adapter # MPG6604 to install the carrier into your crossbar's T-slot channel.
    view full answer...
  • Using Adapter Kit for Malone Downloader on Aero Bars
    The Malone DownLoader Kayak Carrier with Tie-Downs - J-Style - Folding - Side Loading, part # MPG114MD, should attach to your aero bars without the Aero Style Crossbar T-Slot Fit Kit for Malone Kayak Carriers, part # MPG6604. The DownLoader comes with four 7mm bolts and four 8 mm bolts. These bolts are long enough to go around your vehicle's aero bars. The T-Slot kit you ordered is designed for customer's who want to attach the DownLoader via the t-slots of their aero bars, that is why...
    view full answer...
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  • 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 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...
  • 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 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...
  • 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...
  • Malone DownLoader Kayak Carrier and Crossbars For a 2016 Subaru Outback
    The Malone DownLoader Kayak Carrier with Tie-Downs # MPG114MD is designed to clamp around round, square, aero, elliptical, and most factory crossbars. You can also mount it to a T-slot using the Aero Style Crossbar T-Slot Fit Kit for Malone Kayak Carriers # MPG6604. You will have enough room to fit 2 of the Carriers on the roof of your 2016 Subaru Outback as the carrier is only 20-1/2" long in the stored position. If you do not already have crossbars I recommend the Malone AirFlow2 Roof...
    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...
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  • 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...
  • 2019 Tesla Model 3 T-Slot Kayak Carrier Recommendation for OEM Roof Rack by Yakima
    For your application I recommend going with the Malone DownLoader # MPG114MD. This will fit any roof rack T-Slot by using the T-Slot Fit Kit for Malone Kayak Carriers # MPG6604. Attached is an installation video of this kit on Rhino-Rack crossbars which has similar dimensions to the Yakima crossbars.
    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...
  • 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 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 are...
    view full answer...
  • Hardware for Mounting Accessories to Yakima LockNLoad Platform Rack
    The T-Slots on the Yakima LockNLoad Platform Rack # Y05044-39 have the same dimensions as standard crossbars so you can basically use any brand of T-Bolts to accomplish your job. For example, you can use the Thule Square T-Bolt # 853208914 or the Malone T-Slot Fit Kit # MPG6604.
    view full answer...
  • 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 can...
    view full answer...
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  • Correct Fit Kit To Use the Malone DownLoader Kayak Carrier in Thule Wingbar Evo T-slots
    The correct fit kit for your Malone DownLoader Kayak Carrier # MPG114MD is the Aero Style Crossbar T-Slot Fit Kit for Malone Kayak Carriers # MPG6604. Alternatively, there is also the Mounting Bolt Set for Malone Watersport Carriers # MAL74VR which are 90mm long to be able to use the clamps with your Malone DownLoader Kayak Carrier # MPG114MD.
    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. 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 DownLoader, part # MPG114MD, has the ramps and is compatible with the Telos XL, part # MPG351XL, which is the additional load assist available from Malone. The upright arms can be folded down when you're not using the carrier for better roof clearance in case you park...
    view full answer...
  • 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 2 # MPG117MD in the T-slots...
    view full answer...
    Image 1 for
  • 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...

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