2015-2020 F150 Auto Spring Rear Add-a-Leaf Kit AAL1502

15-20 F150 Auto Spring Rear Add-a-Leaf Kit

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Part#:

AAL1502

25 Review(s) Write a Review

60 Customer Q&A(s)

$199.95

Ships From Manufacturer. Average Time To Ship Is 2-3 Business Days

Product Features
25 Customer Review(s)
60 Q&A(s)

Highlights:

Add rear ride height and improve carrying capacity
Includes two high-strength steel leafs with adapter pins
Adds 1.5" of rear ride height after settling
Great for towing applications on leveled or lifted trucks
Drop right into the factory leaf packs
Can reuse stock U-bolts

Increase Rear Ride Height and Towing Capacity for your F150

2015-2020 F150s that do some serious towing or hauling are going to need more than a standard rear block in order to get the job done, and Auto Spring is here to help with their high-quality Add-a-Leaf kit for the 2015-2020 F150s. This pair of leaf springs install directly into your F150's stock leaf pack without any drilling, cutting or trimming, and add up to 950lbs of carrying capacity to your truck. The F150 Auto Spring Add-a-Leafs are also capable of increasing rear ride height by up to 1.5" to 2", giving your truck an aggressive look while helping keep your F150 level when you're towing or hauling all of your gear. The Auto Spring Add-a-Leaf Kit are perfect compliments to 2" leveling kits or coilovers, giving your F150 a mean look while letting you fit on proper-sized off-road tires.

High-Strength Leaf Springs That Reuse the Stock U-Bolts

Each one Auto Spring's F150 Add-a-Leaf Kits comes with a pair of high-quality leaf springs, new pins, and installation instructions. The springs are manufactured out of extremely strong, US-sourced 5160 tempered spring steel that allows them to hold up to just about any application that you have in mind. The springs also have Teflon pads on each end which reduce NVH and help prevent squeaking during break-in. The springs install directly into your F150's factory leaf pack and are completely compatible with your F150's factory U-bolts and rear shocks for most applications. Auto Spring includes a set of four new Grade 5 adapter pins for installation.

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We here at Stage 3 love and appreciate all of our Canadian customers. What we don't love is charging an arm, a leg, and maybe a kidney for shipping across the imaginary line up North. The good news is that we can ship this Auto Spring Kit to Canada for the low rate of $75! Just call us at 1-877-578-2433 to take advantage of this deal!

Write a Review

2015 F-150 XLT

I have a capper, wood bench, extra battery etc...always in the truck, so with a full load it really starts to sag, or when towing, especially with my leveled front. I wanted to get rid of my sag and get some extra weight capacity and ended up giving this a try. First, it raised my back end about 1 3/4-2 inches, so I have a bit of the factory rake back. Second, I can have a full load in the back without sag. The ride isn't any worse than before, no bounce in the back. It's over 40 inches in length so it isn't some tiny spring that makes the ride rough..I would buy it again without hesitation.

Did you find this helpful? 22 of 22 Found Helpful

Reviewed by: LL33 from Raleigh NC on 4/10/2016

2015 F150

After placement of the 'add-a-leaf', the stock u-bolts were not long enough to allow for a full nut's length of thread. Both I and the Ford Dealership, doing the installation, agreed that this was not as safe as it should be; a full length minimum should be required to avoid any undo stress on the threads holding the spring assembly onto the axle. Longer u-bolts, not provided in the Stage-3 Add-a-Leaf kit, were obtained and used to complete the installation.

Did you find this helpful? 19 of 23 Found Helpful

Reviewed by: JD Smith from Cedar Creek, TX on 11/17/2017

2016 F150 SuperCrew

Install time was 3 hours including jacking and supporting vehicle and locating tools. I installed the leaf after installing 2.5 front leveling kit. The front leveling kit after alignment gave .5 lift to the rear. After the add a leaf I gained 1. Truck looks and drives amazing, not rough at all !!

Did you find this helpful? 12 of 13 Found Helpful

Reviewed by: David from KEY LARGO on 2/13/2018

2.7l F-150 super crew FX4

Very easy to install (with car lift), I had an issue with squat do to carrying my RTT w/ bed rack, drawer system, fridge w/ fridge slide, 100ah Deep cycle AGM batt, camp stove....etc. these remedied that quick, gain my body clearance back. Would recommend these over helper springs.

Did you find this helpful? 10 of 10 Found Helpful

Reviewed by: Chris from Nevada on 11/29/2017

2015 F150

This is just what I was looking for. I installed the Rancho Quick Lift Loaded combo on the front to level my truck but I was not satisfied with the look. Instead of installing an airbag suspension on the back like my previous truck in went with these and so far I am very happy with my decision. Install was a breeze and had no issues.

Did you find this helpful? 8 of 8 Found Helpful

Reviewed by: Jon E from Pennsylvania on 11/10/2016

2019 F150 FX4

Cannot comment on the install, strictly because $200 for 4wheelparts to install was cheaper than me dragging the jack out of the garage. Previously I had leveled the truck with 5100's. When I towed my 5k lb trailer I would have 2" sag in the rear. I decided to upgrade to a 10k lb trailer and knew I needed the help. As you can see from the picture, these things rock! I picked up just shy of 2" in the rear after install. To address the ride.... Shut up. You want a Cadillac, go get one. Its a truck. To say the ride is "slightly" more chopper would be a stretch. I will take the ride over looking like an idiot going down the road with my rear bumper dragging the road with a load on it.

15-20 F150 Auto Spring Rear Add-a-Leaf Kit Review Image!

Did you find this helpful? 7 of 7 Found Helpful

Reviewed by: Ray from ATL on 7/31/2019

Ford F-150 2018

Excellent product and did exactly what was advertised. I hauled 1,500 lb. to 2,000 lb. pallets across town about 20 times recently and afterward I noticed my truck had permanently sunk 1.5. I bought this product to increase the hauling capacity and to get the lift back and it worked perfectly. I had a local company do the installation and they had no problems at all. It might be difficult to see the lift difference in the before and after pics because its only 1.5 , but its there if you look close enough. And I could tell immediately in person. I like knowing that I have that extra hauling capacity. I noticed no difference in the ride quality after installation. Thank you!

Did you find this helpful? 6 of 6 Found Helpful

Reviewed by: Ryan from Grandville on 10/10/2018

2017 f150 2.7

I had installed fox 2.0 coilovers on my truck for about 1.75' of lift leaving the rear nearly an inch higher than the front. A leer topper and 20k miles later the rear factory 1.5' block had allowed the back of the truck so sag nearly level with the front. Load some wood or gear in the back and the truck would go nose high and even hit the rear bump stops on rough surfaces. I decided to grab these AAL's and give them a try. I removed the factory block and put these in their place. The rear is back to an inch rake over the front and the ride is so much better! Possibly a little firmer ride but not harsh in any way and handling is much improved. If I ever buy a new f150 I will immediately remove the factory block and put these in. Not one complaint, easy install and a quality product that's worth the money. Took about two hours in my garage. If you put as much as a golden retriever in the bed of your truck you need these!

Did you find this helpful? 6 of 7 Found Helpful

Reviewed by: Wesley Bierma from Durango, CO on 11/19/2018

2015 Ford F150

Product helped level my truck when hooked up to my 5th wheel trailer. Ride quality did not suffer and installation was a breeze.

Did you find this helpful? 5 of 5 Found Helpful

Reviewed by: Scott from Osoyoos B.C. on 9/26/2016

2018 F150

These springs did exactly what I hoped for. Raised rear end up 1 1/2 and she doesn't sag when putting 200 lbs. in bed.

Did you find this helpful? 3 of 3 Found Helpful

Reviewed by: Clark from Pa on 3/15/2018

2015 Ford F-150

Great Product, perfect fit, easy installation Recommended AAA+

Did you find this helpful? 3 of 3 Found Helpful

Reviewed by: David S. from Ecuador on 5/10/2018

2017 F150

easy install with a lift and a couple of clamps. lifted the rear just enough to provide some slight rake when towing and doesn't feel that much stiffer.

Did you find this helpful? 2 of 2 Found Helpful

Reviewed by: Ryan from Alabama on 2/25/2018

2017 F150 Ecoboost Supercab 4x4

After installing my Bilstein 5100 Leveling kit at the second from highest setting, the truck would squat with barely any weight in the bed (2.7l eco). I carry a deep tool box with about 200lbs of tools at all times and it felt like the truck was back heavy. Once I installed the leaf (left stock blocks in) the truck almost has a stock rake back, rides better, handles weight better, and tows better.

Did you find this helpful? 2 of 2 Found Helpful

Reviewed by: Shaun T from Lehigh Valley Pa on 3/9/2019

2015 f150 crewcab

Install was easy, also installed new skyjacker shocks eliminated my axle wrap problem while towing. Also truck rides smoother then new to my surprise. I have also 2.5 level kit in the front truck sit nice when new but after 40,000 miles and lots of hulling and towing rear was starting to sag, these make it sit perfect thanks

Did you find this helpful? 2 of 2 Found Helpful

Reviewed by: Paul from Northern cambria pa on 10/26/2018

2018 F150

I have a 2018 F150 XLT. I purchased the truck and immediately installed a 2.5” front leveling kit. This set my truck within a 1/4” of perfect level. When towing a UTV my truck would squat significantly in the rear. I started looking for options to maintain the desired stance. After reading reviews I decided to purchase the add a leafs. I installed the add a leafs my self using jacks and jack stands. It took me about an hour. While installing I removed the factory blocks(1.25” blocks) and this set my truck right at 40” in the rear. This gives my truck a 3/4” rake and increasing the rear height by 1/2”. The ride quality hasn’t suffered much. You can feel a little stiffer ride but only slightly. The increased stabilization while towing is worth the slight stiffness in the ride. At 4000 miles in I’m very pleased.

Did you find this helpful? 2 of 2 Found Helpful

Reviewed by: GR Cobbs from Shreveport, La on 8/22/2019

2017 F150

Super east install, raised the rear end just like it was supposed to. No negative driving impacts noticed.

Did you find this helpful? 1 of 1 Found Helpful

Reviewed by: Andy from San Diego on 9/7/2019

2017 F-150 Crew Cab FX4

Added the perfect amount of lift to my truck and compensated for the extra weight of the Leer Cap I added. The Fox 2.0+the leer were a little too much to keep the truck level, so this provided a small amount of rake now that it has settled out. The only thing that would make this kit better would be included U-bolts for the application as I felt they could have been a little longer.

Did you find this helpful? 1 of 1 Found Helpful

Reviewed by: Matt from New Orleans, LA on 4/25/2019

2015 F 150

They did exactly as they should. Lifted the back up about 1 1/2" and increased payload. They stiffened the ride quite a bit more than I would desire but hopefully they will break in.

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Reviewed by: Cole from AZ on 7/17/2019

2017 F150

Great add to my truck and made a huge difference.

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Reviewed by: Kevin Tavares from Atlanta on 8/13/2018

2015 F150 Lariat 4x4

Works great, leveled my truck out perfect. I have a fiberglass topper on the back that made a difference in the stance, she now has the stance of a real truck with the add a leaf. Can't really tell a difference in the ride quality either, still rides great. Took about 4 hours to do both sides with no power tools. Pretty easy job.

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Reviewed by: Isaiah from Clarksville on 1/18/2020

2019 F150

Simple to install only took 2 hours.

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Reviewed by: Paul from indianapolis on 3/28/2020

2018 F150

These springs were great quality. Install was straight forward. I YouTube’d the install. They recommend using some hand clamps to hold the spring pack together while assembling. Good trick. Lifted the rear and of my truck 2” when all said and done.

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Reviewed by: Josh Nichols from Washington State on 8/13/2020

17 5.0

For the price point these leafs are super legit. Install per side is 30 minutes tops if you're mechanically inclined. I installed them and immediately towed 9k on stock shocks with no squat with 2" leveling pucks (previously installed before leafs) Before the Add a leaf, I had 2" leveling puck making full level no factory rake. After the add a leaf settled it return to factory like rake with the 2" leveling puck still installed, so if you're going to install these with no leveling or other suspension work, your rake is going to be utterly ridiculous.

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Reviewed by: S. Kovax from Texas on 12/23/2020

F150

Easy installation. Lifted about 1-1.5” in ride height. Ride not stiff.

Did you find this helpful? 0 of 1 Found Helpful

Reviewed by: Robert Klingaman from Temecula, CA on 6/19/2019

2018 Ford F150 4WD

This item is supposed to raise the rear end of your truck 1.5-2". After installing these leaf springs and a 2.7" lift to the front, my ride went from a 1.5" rake to a 1.25" squat ... meaning the rear end was lifted a whopping 0.05 inches. Additionally, the whole point of add-a-leaf springs is to prevent sag under load. Unloaded, there was 1.5" is space between the bottom of my Timbren SES and its base plate. After loading half a cord of wood, there was no more space in the SES. As far as I can tell, these leaves have done absolutely nothing for my truck's suspension. The only good thing I can say is that they're heavy steel. Unfortunately, they are also difficult to install, since you have to take your existing spring pack apart to install these leaves right above the bottom leaf in the factory spring pack. This product is not even close to the performance and convenience of Hellwig's Helper Springs and are actually more expensive. I wish I had found out about the Hellwig springs before I bought these add-a-leaf springs.

Did you find this helpful? 0 of 5 Found Helpful

Reviewed by: Ted M. from GREENFIELD on 5/17/2020

Have Questions?

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Would getting the rear add a leaf require something for a stock front end? I.e. Lift or level?

Asked by: Ian - 6/5/2016

You wouldn't strictly need to, but putting an Add-a-Leaf Kit on your truck will increase your truck's front rake significantly, and you may not appreciate the stance. Still, you don't technically need to add any front lift in order for the Add-a-Leaf Kit to fit an function on your truck.

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Answer provided by: [email protected] (6/6/2016)

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Will these work on a 2018 Ford Raptor?

Asked by: Dave - 4/11/2018

They will not. The 2017-2018 Raptors have an entirely different leaf pack than the standard F150s.

Was this answer helpful? 3 of 3 Found Helpful.

Answer provided by: [email protected] (4/11/2018)

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Hi, I installed the Readylift 69-2300 3.5" lift kit and 2" block in rear. Taht Block is 3" but Lift the truck only 2" when reemplaced stock. The question is: I want to go up an inch more and I think with this I will achieve it but I will have to buy some spacer for the Driveshaft or not?

Asked by: Angel Vazquez - 1/12/2019

You will likely need a driveshaft spacer, as well as new rear shocks, since this add-a-leaf kit would essentially put you at 3 to 3.25" of net lift after it settles, which is 4" lift kit territory. A 3" rear block should get you 1.5" to 1.75" inches of net lift depending on the size of your factory rear block (1.25" or 1.50" depending on year, submodel, and options). Frankly, I don't recommend going that high. Your better bet would be to get a smaller rear block and they possibly pair that with the add-a-leaf kit. Your best bet would be to call us directly at 623-44-5277 so we can get more specific about what you're trying to do.

Was this answer helpful? 3 of 3 Found Helpful.

Answer provided by: [email protected] (1/14/2019)

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What's the average hight these are getting? And is there an option to were I can only get one inch? Thanks!!

Asked by: Mike k - 8/21/2016

The Add-a-Leafs generally start out at a 2" ride height gain that settles down to roughly 1.5" after they've been broken in. Unfortunately, Auto Spring does not currently offer an add-a-leaf kit with less lift.

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Answer provided by: [email protected] (8/22/2016)

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Hi, I am planning on purchasing a 2017 f150 soon. I would like to have it level with the rancho quicklifts in the front. Can these be ran with the factory 1.5 blocks removed on the rear so that I would still maintain a level stance if towing? Thanks

Asked by: Mark - 2/9/2017

You theoretically could, though you probably want to check the amount of thread on your factory U-bolts, since you'll be using them farther up.

Was this answer helpful? 2 of 2 Found Helpful.

Answer provided by: [email protected] (2/10/2017)

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Can I run these with fabtech 6in lift blocks and still grab another 1.5-2in of lift?

Asked by: Austin - 1/27/2016

You technically can, though you're going to need to be fairly careful and make sure your e-brake cable and brake lines aren't overly stretched or stressed, and if they are, you may need to get them extended. Also, you may need to add a driveshaft spacer or get a larger driveshaft spacer, as adding an Add-a-Leaf kit to a lift will generally cause your truck's driveshaft to slip from the yoke farther than just the lift kit alone. I would strongly recommend getting the driveshaft spacer a head of time.

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Answer provided by: [email protected] (1/28/2016)

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Will I need to replace my factory shocks with longer travel shocks with the addition of the add-a-leaf kit?

Asked by: OakTree20 - 10/4/2016

You technically don't have to. The factory shocks can handle the additional ride height. That being said, ride quality can stiffen up a bit when you use an Add-a-Leaf kit with the stock shocks.

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Answer provided by: [email protected] (10/5/2016)

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I see a review mentioning the stock bolts are not long enough, has this issue been fixed? Can you add longer bolts prior to shipping?

Asked by: nyc150 - 3/23/2018

This kit does not come with longer U-bolts, and it's designed to be used with the stock U-bolts. When reinstalling the stock U-bolts, it's important to get them properly seated and to thread the nuts on evenly. Most folks only have issues if they quickly zip the nuts back on with an impact without ensuring even seating.

Was this answer helpful? 1 of 1 Found Helpful.

Answer provided by: [email protected] (3/26/2018)

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I'm looking to add this AAL kit as well as install Bilstein shocks. With the 5100 being rated for 0-1" of lift, do I need to step up to the 5160 on the rear?

Asked by: Jake - 5/16/2018

Technically speaking, you would need a 0-2" rated rear shock for this add-a-leaf kit like the 5160s, Halo Lifts Boss 2.0 Shocks, or ICON 2.0s. That being said, a lot of folks have used the Bilstein 5100s with an Add-a-Leaf Kit and not have had issues, though that does technically push beyond the rear lift that Bilstein rates them for.

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Answer provided by: [email protected] (5/17/2018)

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Will this add a leaf kit fit a 2018 ford raptor?

Asked by: Kyle - 7/18/2018

It will not. The Raptors use a different leaf pack than the standard F150s.

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Answer provided by: [email protected] (7/19/2018)

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2015-2020 F150 Auto Spring Rear Add-a-Leaf Kit AAL1502

AAL1502

Increase Rear Ride Height and Towing Capacity for your F150

High-Strength Leaf Springs That Reuse the Stock U-Bolts

Would getting the rear add a leaf require something for a stock front end? I.e. Lift or level?

Will these work on a 2018 Ford Raptor?

Hi, I installed the Readylift 69-2300 3.5" lift kit and 2" block in rear. Taht Block is 3" but Lift the truck only 2" when reemplaced stock. The question is: I want to go up an inch more and I think with this I will achieve it but I will have to buy some spacer for the Driveshaft or not?

What's the average hight these are getting? And is there an option to were I can only get one inch? Thanks!!

Hi, I am planning on purchasing a 2017 f150 soon. I would like to have it level with the rancho quicklifts in the front. Can these be ran with the factory 1.5 blocks removed on the rear so that I would still maintain a level stance if towing? Thanks

Can I run these with fabtech 6in lift blocks and still grab another 1.5-2in of lift?

Will I need to replace my factory shocks with longer travel shocks with the addition of the add-a-leaf kit?

I see a review mentioning the stock bolts are not long enough, has this issue been fixed? Can you add longer bolts prior to shipping?

I'm looking to add this AAL kit as well as install Bilstein shocks. With the 5100 being rated for 0-1" of lift, do I need to step up to the 5160 on the rear?

Will this add a leaf kit fit a 2018 ford raptor?

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