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Yakima CoreBar Crossbars - Steel - Black - 50" Long - Qty 2

Yakima CoreBar Crossbars - Steel - Black - 50" Long - Qty 2

Our Price: $194.95
Roof Rack

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These crossbars combine the strength of steel with an aerodynamic shape to create a heavy-duty yet quiet roof rack for your vehicle. Full-length bars maximize cargo carrying capacity and work with most clamp-on accessories. Lowest Prices for the best roof rack from Yakima. Yakima CoreBar Crossbars - Steel - Black - 50" Long - Qty 2 part number Y00421 can be ordered online at or call 1-833-496-1390 for expert service.
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Yakima Roof Rack

  • Crossbars
  • 2 Bars
  • Aero Bars
  • 50 In Bar Space
  • Yakima
  • Black
  • Steel

These crossbars combine the strength of steel with an aerodynamic shape to create a heavy-duty yet quiet roof rack for your vehicle. Full-length bars maximize cargo carrying capacity and work with most clamp-on accessories.


  • Aero-style, steel crossbars let you build an aftermarket roof rack for your vehicle
    • Pair with Yakima towers and a fit kit (sold separately) to create a complete roof rack
  • Aerodynamic, teardrop shape helps to create a quiet roof rack system
    • Controls air flow to significantly reduce wind noise and vibration
    • Reduces drag to help maintain your fuel efficiency
  • Full-length crossbars maximize space for clamp-on carriers and accessories
    • Accommodate most universal-mount bike, water, snow, and cargo carriers
  • Easy installation on Yakima towers with included brackets and hardware
    • Works with BaseLine, RidgeLine, SkyLine, and TimberLine towers (sold separately)
  • Roll-formed, galvanized steel bars are extremely strong and durable
    • Black vinyl coating protects the bars from corrosion
  • Plastic endcaps help to keep water and debris out of bars


  • Quantity: 2 crossbars
  • Crossbar weight capacity: 220 lbs
  • Dimensions: 50" long x 2-3/4" wide x 1" tall
  • Limited lifetime warranty

Yakima CoreBar

The aerodynamic Yakima CoreBars let you build a quiet yet heavy-duty roof rack for your vehicle. The crossbars require 4 Yakima BaseLine, RidgeLine, SkyLine, or TimberLine towers and a custom fit kit (sold separately) to mount the rack to your roof. Each bar extends past the towers to maximize space for mounting carriers and accessories. The bars are constructed of galvanized steel so they can carry more weight than traditional aluminum aero bars. And they're coated in black vinyl to help prevent corrosion.

Aerodynamic Design

CoreBar TearDrop Design

The CoreBar's teardrop shape controls air flow over and under the bar to significantly decrease wind noise and vibration even at highway speeds. This lessens the need to add a fairing to your roof rack. The aero-style bar also reduces drag to help maintain fuel efficiency.

Heavy-Duty Steel Construction

CoreBar Galvanized Steel Construction

The Yakima CoreBar is constructed of roll-formed, galvanized steel. This heavy-duty steel construction enables the CoreBars to carry significantly more weight than traditional aluminum aero bars (up to 220 lbs depending on the weight capacity of your roof). The bars are also coated in black vinyl to protect them from corrosion.

Hassle-Free Installation

CoreBar with Adapater

The CoreBars install on any of Yakima's StreamLine towers - BaseLine, RidgeLine, SkyLine, or TimberLine - with included brackets. Just remove the endcaps, slide the brackets onto the bars, and replace the endcaps. Then place the bars on your towers with the brackets seated in the tower BarBeds. Use the torque tool included with the towers to tighten the bars in place.

Maximum Cargo Carrying Capacity

Full Length Corebar Crossbar

The full-length CoreBar extends past your towers to provide more space for mounting carriers and accessories on your roof. The CoreBar is also compatible with most universal, clamp-on carriers and accessories.

8000421 Yakima Core Bar Cross Bars - Steel - Aero Profile - 50" Long - Qty 2

Item # Y00421

This Product Fits The Following Vehicles

Customer Satisfaction Score:

Customer Reviews

Yakima CoreBar Crossbars - Steel - Black - 50" Long - Qty 2 - Y00421

Average Customer Rating:  4.8 out of 5 stars   (188 Customer Reviews)

These crossbars combine the strength of steel with an aerodynamic shape to create a heavy-duty yet quiet roof rack for your vehicle. Full-length bars maximize cargo carrying capacity and work with most clamp-on accessories.


THERE'S A PIECE MISSING, A rubber cap on 1 of the crossbars

I wanted to let you know the end caps are replaceable. They are part # 8880640
Replacement Endcaps for Yakima CoreBar Crossbars - Qty 2
on our site.
-- Etrailer Expert Jenny N - 08/01/2022

2016 Subaru Forester

Very good product. The Yakama towers and cross bars feel very solid and appears to be high quality. Very easy install. Others have complained about the instructions, but guess I'm a visual person because the pictures all seemed very clear to me and the install was very easy. They do sit higher than I expected. After adding a Rhino Rack cargo basket, we only have about 4-5" clearance below the garage door.

No questions or comments. They are on my wifes Forester and she loves them.Thanks
Axl - 01/03/2018

Honda Ridgeline

These crossbars feel like they are well made and sturdy. It took less than 30 minutes to install with the Ridgeline Towers. I love the look of the bars! Can't wait to load the Kayaks up and get out on the water.

2015 Toyota 4Runner

Timely delivery of my order, as usual! Easy to install on my 2015 4Runner. After I had the mounts ready and put on both bars, I installed the front one and fine-tuned it, the second took even less time then. I now have the ability to carry up to 3 kayaks, perfect! etrailer is a great company!

2015 Mazda 6

My experience with etrailer has been excellent. There was going to be a potential delay in one of the products, but their customer service promptly informed me, half the price of some of their competitors so can't really complain. In the end they got the part ahead of schedule and was able to ship in a timely manner. I will definitely keep them in mind for future purchases.

2004 Toyota Camry

I have a 2004 Toyota Camry, my purpose is to purchase this Yakima Baseline System for Rooftop tent. My 23Zero rooftop tent weighs 130 lb, so far it's super solid. I did some minor adjustments based on the shape and level of the roof when mounting it.


Very solid roof rack solution but the wind noise is mind-numbing. Ugh.


Very solid roof rack but the wind noise is insufferable. Ugh.


My son is very pleased with his Yakima Rack. Glad HE MADE THE RIGHT CHOICE ! Iam back on line to order his bike attachments.


Instructions are very unclear,not a happy customer,I may be returning racks

I am happy to help with the installation. Can you explain in more detail the difficulty that you are having. Have you had the chance to view the video installation on a 2016 Honda CR-V.
-- Etrailer Expert Jenny N - 01/07/2022
I think I figured it out. Ty
-- comment by: Richard - 01/07/2022


Roof rack fits and works as advertised. Over the phone customer support for sales and install directions were very helpful and thorough. Geoff is an excellent brand ambassador who goes above and beyond to fulfill customer expectations. I will definitely be shopping at etrailer for my future vehicle needs. Well done!


Wonderful service from Kimberly at I had ordered a roof rack in December for I car I had on order. Ultimately I purchased a different vehicle more than 3 months later and the roof rack and mounting parts were not compatible. I had no problem returning the unopened products and just needed to pay the postage. Kimberly made the process easy and seamless, making sure to send the new Yakama cross bars and necessary parts. It fits beautifully on my new car and setup was fairly simple with video support and step-by-step instructions.


I am thrilled this got delivered sooner than anticipated! It was quite easy to install once you started actually putting it together and measuring everything out. I like that this can easily be removed and installed onto the vehicle.

Kia Soul

Hats off to etrailer and Lori B. Had ordered the wrong roof crossbars for my daughter's 2021 Kia Soul. Called on a Sunday, the day after Chritmas and Lori B answered the phone. Told her my issue within 5 minutes problem was resolved and the " Right" parts were headed my way. Outstanding Customer Service thank you so much. Customer for life!


Customer service was excellent, they called me to tell me one item was backordered and how long it would be. Package was shipped with enough packing material. Install was pretty easy, some of the Yakima measurements in the manual are a couple inches off but no big deal. This will be used to carry a box for when the family takes trips. Can pile all the luggage up top and have more room in the car. I would recommend the Yakima corebar roof rack and etrailer! Their price was lower than 2 other sites I checked.

2017 Ford Edge

Very happy with the Yakima roof top rack kit for my 2017 Ford Edge with glass roof. The instructions were a little confusing at first, but after reading through them a couple of times while working with the product they became much clearer. The Yakima fit site was helpful as well. After the initial cross bar mounting measurements and set up, attaching and detaching the racks from the roof is a very simple process.


Great product! Relatively easy install, had the racks on for a few days now with no issues.


i hope to get them installed soon when i do ill give an update
Great service from etrailer

2015 Jeep Cherokee

The cross bars come with the items needed to install them on the mounts. Easy installation and the best part is they don't add much wind noise even at freeway speeds. I've only had them on the car for a day so I'm looking forward to putting them to use


The rack looks to be excellent. The assembly is a nightmare. The instructions are terrible. The design for assembly is flawed. There is a stupid cover over the main bolt that you have to tighten. There is a video on Yakima’s website that kind of tells you how to get around it but not really. A 30 minute job took two hours.


The items ordered fit great and were delivered promptly! Etrailer came through with product options, fit for my vehicle, and great pricing. Will use again for sure!


We bought this at the same time as a roof rack for our first family camping trip. These were really easy to install and have held up excellently in the last year.


Great product and Sales Support from etrailer.
I bought this for my Son as a Grad/BDay gift for a Honda HR-V which has slightly odd roof/door shape
He installed it himself said the install was straightforward but the instructions could use a little improvement.
etrailer Sales Support was great, I was a little concerned about getting the right parts and the return policy. Olivia was great to work with, she offered recommendations and matched the parts to the type and vehicle it was to be installed on along with a kayak mount.
All the parts arrived in mint condition with no missing pieces.
I'll for sure return to etrailer on future purchases.


Bars worked as advertised and fit my needs. Good product.


These fit as advertised and work just fine. The customer support, on the other hand, was outstanding.

Show More Reviews

See what our Experts say about this Yakima Roof Rack

  • What Rola Roof Rack Is Available To Fit A 2009 Mazda 3 Model 5-Door Hatchback
    The Rola Sport Series Roof Rack with APE Mounting System, part 59714, is discontinued as it # 59715. An alternative is the Yakima # Y00421 crossbars, with # Y00148 towers, and # Y00248 landing pads. There is no drilling involved to install this roof rack. The 2004-2009 Mazda 3 5dr Hatch vehicles came with pre-installed anchoring locations that this roof rack bolts too. I would double check and make sure you find those anchoring points on your vehicle.
    view full answer...
  • Can Yakima Core Bar Roof Rack Crossbars Y00421 Be Cut Down in Length
    Yakima's Core Bar roof rack crossbars # Y00421 can be cut to a specific length so long as you can make clean square cuts to allow re-installation of the bar end caps. You will probably also need to file the cuts to make them smooth and safe for handling. The Yakima roof racks confirmed to fit your 2018 Toyota RAV4 are shown on the page I linked for you. These racks use bar lengths of 48 or 50-inches.
    view full answer...
  • Difference Between Yakima CoreBar and JetStream Roof Rack Crossbars
    There are a couple of differences between the two. The JetStream bars like # Y00425 are made of extruded aluminum while the CoreBars such as the # Y00421 you've looked at are constructed of galvanized steel. As you've mentioned, the CoreBar has a higher capacity. The primary difference is that the JetStream bars feature the T-Slot channel at the top that allows quick and easy accessory installation, while accessories used with the CoreBars would need to clamp around the crossbar. The...
    view full answer...
  • What is Advantage of Top Channel on Yakima JetStream Bar over Core Bar
    The top channel on the JetStream bars have the advantage of offering an easier/cleaner way to attach roof rack accessories. A lot of roof rack accessories are now being made to attach to a channel on the top of the bar. The CoreBars are a less expensive and still a really great bar but it comes down to what type of attachment you prefer. If you let me know what vehicle you have I can help get all of the parts together to install either style of rack on your vehicle.
    view full answer...
  • Is Weight Capacity of Yakima CoreBar Crossbars Per Bar or for Pair
    The weight capacity of the Yakima CoreBar Crossbars like part # Y00421 is 220 lbs which is for loads evenly distributed across both bars. If you need a higher weight capacity, Yakima does off the HD Crossbars like part # Y01157 which have a 500 lb weight capacity. Please note, the feet and or vehicle roof may be rated lower and in which case you would abide by the lowest of the three components whether that be the crossbars, feet, or vehicle.
    view full answer...
  • Parts Needed to Mount Yakima Space Cadet Cargo Box on Roof of 2008 Honda Odyssey
    In order to mount your Yakima Space Cadet Cargo Box to the roof of your 2008 Honda Odyssey you will indeed need to add crossbars. For your Odyssey that features the factory raised side rails I recommend the Yakima CoreBar System. This roof rack consists of # Y00421 for the two 50 inch CoreBar Crossbars and # Y00147 for the TimberLIne Towers that will attach to the side rails. I have attached a short video demonstration on this roof rack that you can check out. As long as you still have...
    view full answer...
  • Adapter Needed to Use Older Yakima PowderHound on New Yakima CoreBars
    I have a solution for you, but the Replacement Mounting Hardware for Yakima PowderHound # Y8860040 will not work with your 3044 Yakima ski rack; I confirmed this with my contact at Yakima. The Universal MightyMounts # Y03590 is exactly what you need to adapt your first generation PowderHound ski rack (for round bars) to fit the Yakima CoreBars, like # Y00421 on your vehicle. I've attached the installation instructions for you to check out at the bottom of the page.
    view full answer...
  • Cutting Down the Yakima Crossbars To Desired Length
    The Timberline is actually the towers # Y00147, so you will either have the CoreBar crossbars # Y00421 or the JetStream # Y00426. You can trim these bars to a shorter length and I do recommend using a new hack saw blade to do so. The aluminum crossbar will cut easily so you will want to make sure you have a very straight cut and take it slow or you would easily mar your bars. Make sure you double check your fit before making any cuts.
    view full answer...
  • Buying ONLY The Yakima Landing Pad 19 For A 2017 Cadillac XT5
    Yes, if you bought the part # Y00245 that will come with just the landing pad! If you have all the other Yakima components # Y00421 and # Y00148 you will be good to install! Check and see if you have I've included an install video for you!
    view full answer...
  • Will the Yakima SkyRise HD Tent Work On a 2016 Toyota Sienna
    The Yakima SkyRise HD Tent part # Y07437 will work on a 2016 Toyota Sienna. It only requires that the roof rack be rated for 165 lbs. The tent does weigh about 120 lbs but the ladder it comes with is used to bear some of the weight for the tent and contents inside which is why it can exceed the roof rack weight capacity when using the tent. I recommend the Yakima CoreBar Crossbar System part # Y00421 part # Y00147 the weakest components is rated for 165 lbs so it will fall within range. Please...
    view full answer...
  • Roof Cross Bars for 2021 Lexus RX 350 With Panoramic Roof
    The specifications I have access to indicate that RX-350's come with flush mounted roof rails that run from front to back. You will need cross bars with towers (feet) and a fit kit for your RX-350. I recommend the Yakima # Y00421 cross bars and you will then need to add # Y00145 towers and the # Y06027 fit kit. I recommend this model as it has an aerodynamic shape that will generate less wind noise when driving and is the sleekest looking. (If it turns out that you do not have flush...
    view full answer...
  • Recommended Yakima Crossbars for 2016 Maza CX-5
    Both the Yakima JetStream Crossbars # Y00425 and CoreBar Crossbars # Y00421 are great aero-style bars that are confirmed to work with TimberLine Towers # Y00147 on your 2016 Mazda CX-5. These are two very similar crossbar designs, and partly because of this, I recommend going with the more economically priced CoreBars # Y00421. The aerodynamic design and teardrop shape on these bars will help to create a quiet roof rack system and reduce wind drag to maintain fuel efficiency. As you...
    view full answer...
  • Roof Rack for 2012 Cadillac SRX to Use Carg Box
    That's a nice thing for you to do for your son and I can help you get what you need. For mounting hardware for the Space Case you can use Replacement Mounting Hardware 8870098; Yakima no longer makes replacement hardware for this cargo box but has previously confirmed to us that this hardware will work. Your son will also need a roof rack that fits the factory rails that run front to back. For his 2012 Cadillac SRX I recommend an option from Yakima, which consists of the CoreBars # Y00421...
    view full answer...
  • Yakima Corebars Compatiblility With Yakima Snowboard/Ski Rack
    There is an option for a Yakima Ski and Snowboard Carriers that is compatible with Corebars without any adapter needed. The Yakima FatCat EVO 6 Locking Rooftop Ski and Snowboard Carrier - 6 Skis or 4 Boards # Y03096 is designed to fit all the various styles of crossbars including the Yakima CoreBar Crossbars like # Y00421 without adapters needed.
    view full answer...
  • Which Yakima Roof Rack Fits 2014 Mazda CX-5 with Raised Side Rails
    For your 2014 Mazda CX-5 with Raised Side Rails we offer several Yakima roof rack options you can see on the linked page. I recommend the Core Bar rack system made of parts # Y00421 and # Y00147. This costs the same as a basic round bar rack but it will create less wind noise thanks to the bars' more aerodynamic shape. I've linked you to some FAQ articles about roof racks and their available accessories.
    view full answer...
  • Needed, Yakima RidgeClips 30 And Yakima CoreBars In 50" or 60" Length
    You need the RidgeClip Fit Kit for Yakima RidgeLine Roof Rack Towers, part # Y06004, and the Yakima CoreBar. Crossbars - Steel - Black. We have them the 60" Long - Qty 2, part # Y00422, and the 50" Long - Qty 2, part # Y00421. I have included product description links and a video review link below.
    view full answer...
  • Can Yakima Bike Rack Install on Aero-Style Crossbars
    We do have a large selection of roof-mounted bike racks that will work perfectly on the flat aero-style Yakima Core Bar crossbars like # Y00421 that you have on your Land Rover. I recommend taking a look at the Thule ProRide XT # TH598004. This carrier will actually secure your bike by the frame so you don't have to take off the front wheel and it has a weight capacity of 44 pounds. A bike lock is also included to help protect your investment. I have attached a short video demonstration...
    view full answer...
  • Will Thule Hull-A-Port Roof Kayak Carrier Fit Yakima Core Bar Roof Rack
    Yes, the Thule Hull-A-Port J-style kayak carrier # TH834 will fit fine on Yakima Core Bar roof rack crossbars. These bars, such as 50-inch set # Y00421, have an aero profile that is fully compatible with the hardware on the Hull-A-Port.
    view full answer...
  • Does Thule DockGrip Kayak Rack Fit 2018 Subaru Outback Limited Factory Crossbars
    Yes, I checked with Thule and for the factory crossbars of your 2018 Subaru Outback Wagon the DockGrip part # TH895 is a confirmed fit and will work well.
    view full answer...
  • Can the Thule Hullavator Pro Kayak Carrier Be Used With Yakima CoreBar Crossbars
    Yes, you can mount the Thule Hullavator Pro Kayak Carrier # TH898 on Yakima CoreBars like the Yakima CoreBar Crossbars # Y00421. The Thule Hullavator Pro Kayak Carrier # TH898 can be mounted using the clamps or in crossbar channels. Just keep in mind that to use the Hullavator, your crossbars need to extend 4"-8" beyond your roof rack feet.
    view full answer...
  • Can the RockyMounts LiftOp Biggie Ski and Snowboard Carrier Be Locked To Yakima Aero Crossbars
    Yes, the RockyMounts LiftOp Biggie Ski and Snowboard Carrier part # RKY1482 comes with locks for both the skis/boards and rack. Therefore, you can lock both the skis/snowboards inside the carrier and the carrier to the roof rack. The RockyMounts LiftOp will also work just fine with both aero crossbars, the Yakima JetStream Crossbars like part # Y00425 and Yakima CoreBar Crossbars like part # Y00421 for example.
    view full answer...
  • Should Sunroof of 2015 VW Golf SportWagen Open with Yakima Corebar Rack Installed
    Yakima recommends keeping your sunroof closed when the CoreBar roof rack part numbers # Y00421 and # Y00147 is installed. This will prevent interference and also hearing the increased wind noise that a roof rack creates. Any standard kayak carrier would fit on this rack as long as it was designed to fit aero shaped bars like the Thule # TH834.
    view full answer...
  • Best Rack For 2011 Subaru Outback with Factory Roof Rack
    The Yakima System I recommend uses the TimberLine Towers # Y00147 because they are simple and just wrap around the raised side rails of your existing rack system. You can use these feet with the Yakima CoreBar # Y00421. Whatever accessory you use needs to be one that wraps around the CoreBar as they do not have T-Tracks on top. For example the eTrailer Kayak Carrier # e98878 I use will work because the mounting hardware wraps around the bar.
    view full answer...
  • Roof Rack Crossbar Recommendation for 2018 Toyota 4Runner
    If you'll only be using the crossbars occasionally, an inexpensive choice like the Curt # C18118 would work well for you. However, if you'll be using the roof rack more frequently, you'll honestly be better off getting a higher quality rack like the CoreBar rack from Yakima, which consists of parts # Y00421 and # Y00147. The Yakima rack is of higher quality, has a greater capacity at 165 lbs versus 150 lbs for the Curt rack. Probably the best thing about the Yakima alternative is that...
    view full answer...

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