Portal Frequently Asked Questions

Yes, it is 100% bolt on.

We offer a 1 year warranty on gears and hubs and a lifetime warranty on the box and upright/knuckle.

We are in development on Toyota Tundra and Land Cruiser 200 series. We are currently developing portals for the following:

• Ineos Grenadier
• Gen 3 F150 Raptor

We also have plans to develop for new G wagons, Chevy Colorado ZR2, 2nd Gen Tundra and LC200, and are looking at several others. We typically develop for newer platforms and don't currently have plans to make a portal for any older vehicles. This may change over time and does evolve with requests, but in our experience, newer platforms are better suited for a variety of reasons. If you don't see your vehicle here that doesn't mean we won't make it — we just develop for the platforms that we see the highest requests for.

All of our kits run $20K and include everything you need. We upgrade your brake rotors with every kit because we assume you are always going with a larger tire. We are working to bring this cost down a bit in the future by going to a forged aluminum product which maintains quality and is quicker and easier to make. This is not a process we are rushing. Cost is absolutely a concern for us as it is for many of you, but we will never compromise quality to get there.

Yes, all factory ABS functionality is retained across all platforms. You will not have a light on your dash.

No. You will not hear gear whine over tire noise. This is due to many factors including tooth profile, contact ratio on the gear set, and the fact that they are spinning at relatively low speeds compared to a transmission. For example, at 80mph the Bronco wheel is actually spinning at about 700rpm. Making blanket statements like "straight cut gears whine" is just wrong. Don't take our word for it — reach out to someone who has a set of our portals and ask for their feedback. We encourage you to reach out to our premier dealers who have lots of experience with our products.

Exodus 4x4, Stellarbuilt, WFO Concepts, Mountain Yotas, Truckers Warehouse, Mule Expedition Outfitters.

This is a USA made product! All engineering, prototyping, and production is done in house in San Diego, CA.

Oil changes are recommended at 5,000 mile intervals. This is a performance product so we recommend you treat it like one.

Yes, go ahead and flat tow with it. No problem.

Our portals add width to every platform. The width gain also depends on the platform. For this reason and many others, we recommend a positive offset wheel. Watch our video about positive offset wheels.

Width gains by platform:

• Jeep — 3.75" per side
• Bronco and Ranger Raptor — 3.5" per side
• 23 and older Toyota — 3.5" per side
• 22+ Tundra and Sequoia — 2.75" per side
• 24+ Tacoma, LC200, GX550, 4Runner — 2.75" per side

The portal is a 1.22:1 gear reduction. To determine what this means for your final gear ratio, multiply 1.22 x gear ratio = new gear ratio with the portal. Example: 1.22 x 4.10 = 5.002 final drive.

No. These are designed to be able to spin faster than your vehicle can ever go.

Yes, you can daily drive on them. We have logged tens of thousands of miles on sets on the road. Long road trips are not a problem either — we have done lots of trips from San Diego to Utah and back.

No. We have done testing in Arizona in the middle of summer on a 7-hour road trip where ambient temperatures were 115 degrees outside and the portals ran about 175 degrees. You will not have heat issues.

3.88". This means your entire vehicle is lifted, giving you unparalleled ground clearance. Your links, drivelines, and axles all get lifted. This keeps your stock geometry and ride quality on road while giving you the ground clearance you need offroad.

The front axle shafts are retained and bolt in. We convert your rear semi float axle to a full float and provide you upgraded 4340 axle shafts.

All final drive in our portals is 1.5" 35 spline. The rear upper gears are also 35 spline allowing you to run larger rear axle shafts. If you run stock housings for now we provide you shafts. If down the road you want to upgrade that axle to a Dana 60, all you will need is new axle shafts to go full 35 spline.

Yes. On top of the reduced torque due to the gear reduction (22%), we upgrade your final drive to 1.5" 35 spline domestic 4340 heat treated axles made here in house.

Our portal reduces torque on the rest of your drivetrain. All of your axles, driveshafts, and drivetrain see 22% less torque.

4 portals, new larger rotors, 4340 heat treated full float shafts, and all the necessary hardware to bolt them on. This is a complete kit — you will not go searching for parts.

This depends on your skill level. There is no welding required and no crazy special tools. If you are comfortable changing a ball joint, you can do this install yourself. We offer very detailed instructions available on our website to anyone, regardless of whether you buy the kit or not. We suggest you read through them and see if you feel comfortable taking it on. We tell people you will probably spend 2 days doing the installation if you take your time.

This is a difficult question. Upgrading to better axle housings with thicker and larger walls is never a bad idea. With that being said, most of our customers are running factory housings and as of January 2024 we have not had anyone bend or break a factory housing. This also really depends on how you drive. Let's run a scenario: you buy portals, put them on your factory housing, and 6 months later you break the factory rear Dana 44. You call us and say "I need to get a Dana 60." All of our components will bolt right on to the 60 housing that we will have custom made for you by Currie or Dynatrac. The ONLY thing you will need to change out is your rear full float shafts because now you will be 35 spline inner AND outer (all of our rear gears are broached for 35 spline). So we sell you a set of full float shafts.

If you just do the portal kit and no additional lift, we recommend a 37–38" tire. Our shop Bronco is a 23 Wildtrak with the factory Fox 2.5" coilovers sitting at stock height with just a portal and it clears a 38x13.5x17 Nitto Trail Grappler tire. We are running ADV Fiberglass inner fender liners and have not trimmed any sheet metal to get the tires to fit.

You can do it but we do not recommend it for several reasons. In our opinion the steering does not produce sufficient power to push a 40 and there is nothing we can do about this. A 40 will also require lots of cutting to get it to fit. We also firmly believe that once you go to portals, the ground clearance gain is so large that the bigger tire is just not needed.

Yes it does. We recommend that if you are doing a portal you should upgrade to our billet steering rack. Currently on our shop Bronco we run our stage 3 rack with factory Ford Performance Tie Rods. This setup seems to work well and we have not had tie rod issues. We still carry a spare set with us just in case, but the Ford Performance ones seem to be fine. If you are concerned, look at the Icon or RPG heim setups for additional strength.

No, the Bronco Raptor is a different chassis than the regular Bronco. The ABS is different and so is the suspension geometry. We do not offer a kit for the Bronco Raptor at this time.

No, we replace your factory upright with our own machined from 7075 aluminum. All of your factory suspension is retained and not affected.

Yes, if it uses the factory upright, then it is compatible with our portals. It will be wide, but it will work.

We give you a larger front and rear rotor standard with our kit. You will retain the front and rear calipers. You will get new brake lines in the kit. You do not need to cut anything with regards to the brake lines. You will need to bleed your brakes once the kit is installed — we provide instructions on how to do this as the 2.7L Bronco will have to be placed in brake bleed mode in order to bleed the rear brakes due to a factory electric master cylinder.

Yes, you will cut about 3/8" off the end of the front factory or aftermarket axle shaft. We require you to do this because making it as compact as possible is very important to us. We provide you with a cut template in the kit. You cut the end of the shaft off with a 4.5" grinder and you are done. If you are not comfortable doing this, we can recommend you to a shop that can help.

Yes, our portals can be ordered with a double shear kit.

Here is everything that it fits:

• 2005–2023 Toyota Tacoma
• 2003–2023 Toyota 4Runner
• 2007–2014 Toyota FJ Cruiser
• 2005–2015 Toyota Hilux Vigo
• 2003–2009 Lexus GX470
• 2010–2023 Lexus GX460

Yes, if it uses the factory upright, then it is compatible with our portals. It will be wide, but it will work.

Sure — here is what that looks like. You bolt a portal on to the front and go with a long travel kit in the rear. You would need to regear your front to 4.30 and your rear to 5.29 and they match. You would then just buy a set of front portals for $10K and put together your own LT kit. We would recommend either JD Fabrication or DirtKing for this.

Yes, if it works with the factory upright, it will work with our kit.

No, we replace your factory upright with our own machined from 7075 aluminum. All of your factory suspension is retained and not affected.

We currently offer a kit that allows you to run a Wilwood 6 piston front caliper. We are in development for kits that will adapt the Powerbrake front calipers. Currently the only kit we support for the rear is the Wilwood caliper we provide with our kit that has an integrated parking brake.

You get to take your factory rear axle shafts and drum brakes off and throw them away. We provide you with a new Wilwood caliper with an integrated parking brake kit as well as everything you need to integrate it into your factory parking brake lever inside the vehicle. We also give you a performance directional vented 2 piece rear rotor.

Yes, our portals can be ordered with a double shear kit.

If you just do the portal kit and no additional lift, we recommend a 35"–37" tire. On my 2023 Tacoma I run a 37" BFG mud terrain tire which actually measures out 36". I did have to do a body mount relocation and massage the firewall with a hammer and grind back the pinch weld, but I did not cut the firewall. I think this is the perfect size tire on a Tacoma. If you want to run larger, you can, but it will require firewall trimming.

I personally didn't like the factory springs with the addition of the GFC, Goose Gear boxes, and gear. I tried out several different rear springs and settled on the Deaver M93 springs. This is a spring under conversion which did require fab work to do. This spring handles the weight I added (about 500lbs), gets more flex, handles axle wrap way better, and is all around the perfect spring in my opinion if you want to run a 37" tire.

No, you can use any 8x6.5 wheel but we strongly recommend a 5.5"–6.5" backspace wheel commonly made by Method, KMC, Raceline, Vision, etc.

Yes, but there is a bit more info we need to provide here. Prior to the 2024 4xe, the gear ratio was limited to 4.55. There is a software update available at the dealer that will allow you to go to a deeper ratio. We convert the factory 4.10 to a 5.0 which we feel is perfect for most all tire size upgrades.

We currently offer a 6 piston radial mount Wilwood race caliper. This is the same caliper we have run on Loren Healy's race car and it works great. We have worked with Wilwood to get you the right pad compound and this kit gives you an amazing brake upgrade.

As with any big tire application, upgraded ball joints are recommended for increased longevity. With this being said, we have lots of customers who run factory ball joints and time has told us they are not having problems. If you are not convinced, we recommend you upgrade yours. There are lots of quality ball joints for Jeep D44s. Our personal favorites are Dynatrac Prosteer.

Yes. Our number one customer on the Jeep stuff is a person who bought a 392 Wrangler, found our product and wanted to bolt it on, throw on a 40, and go. If you have a JL Rubicon or a JT you might want to run a slight 1.5–2.5" lift to clear the 40, but minimal lift, change out the wheel and tire, and you are good to go.

Upgrading to a 1 ton unit bearing means you lose your factory drum parking brake. We do have a kit that is 100% bolt in and uses a high quality Wilwood mechanical caliper which bolts into your factory console so you can keep your parking brake.

As with any big tire application, the factory front axle housing tubes are a weak point. While we recommend better housings, the reality is most of our customers for the past 2 years are running them on stock housings without issues. If you end up bending the housings, you can always replace them with stronger ones after the fact. The only thing you would then have to change is the rear full float shaft if you go with a D60. All the other parts will still bolt up.

We offer bolt on kits for the following:

Front Axles: All JL, JK, JT, 99–04 Super Duty Ball Joint 60, Currie Dana 60, Dynatrac ProRock 60

Rear Axles: JL Rubicon, JT, Currie Set 80. We are not compatible with the factory JK or JL Sport rear housings. These run smaller bearing cups that we don't support.

Yes, we convert you to 8 lug. We recommend a +25 offset wheel with our portal. This narrows your overall width and tucks the brake calipers into the wheel.

JK/JL Portal knuckles will have the best scrub because SAI is 12 degrees vs 9 degrees on the BJ60.