2010-2020 F350 Auto Spring Rear Add-a-Leaf Kit | AS350AAL

Name: 2010-2020 F350 Auto Spring Rear Add-a-Leaf Kit
Brand: Auto Spring
SKU: AS350AAL
Price: 350.00 USD
Availability: InStock

2010-2020 F350 Auto Spring Rear Add-a-Leaf Kit

SKU AS350AAL

3 Review(s)

$350.00

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

Free shipping included

Earn reward points with this purchase

4 Customer Q&A(s)

Write a Review

Increase Rear Ride Height and Towing Capability for your Super Duty

2010 to 2020 F350s 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 2010 to 2020 Super Dutys. This pair of leaf springs install directly into your Super Duty's stock leaf pack without any drilling, cutting or trimming, and add up to 1100lbs of carrying capacity to your truck. The F350 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 Super Duty 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 Super Duty 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 F350 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 Super Duty's factory leaf pack and are completely compatible with your F350's factory U-bolts and rear shocks for most applications. Auto Spring includes a set of four new Grade 5 adapter pins for installation.

Fitment: 2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017, 2018, 2019, 2020 F350 Only.

F350 Only: this add-a-leaf kit only fits F350 models. It will not fit F250s. A version for F250s is also available.

Write a Review

15 f350 crew cab, drw 4x4,8' bed

Like the easy install, brought the truck up enought on the back.

Did you find this helpful? 2 of 2 Found Helpful

Reviewed by: Ray from Wilmington on 2/29/2020

2022 F350 CCLWB SRW

Excellent finish and fit. The photo listed on Stage 3 is just a stock photo of a random leaf with two separate holes. After opening my springs I immediately realized there was only one hole. A quick call to the manufacturer set me straight and they explained their efforts to update the instructions and stock photos. You simply remove the stock roll pin in the overload spring and drive on. Definitely need a cutoff wheel to shorten the supplied center bolt but the extra length comes in more than handy when trying to reassemble. 5 stars all the way and YES, it fits a 2022!

2010-2020 F350 Auto Spring Rear Add-a-Leaf Kit Review Image!

Did you find this helpful?

Reviewed by: Aaron White from North Carolina on 9/1/2021

2021 F350 4X4 Crew Cab Long Bed

Fit great and fast shipping!

Did you find this helpful?

Reviewed by: Luke Packer from Boise on 5/2/2022

Will this kit work on a 2015 f350 SRW with factory overload springs?

Asked by: Travis - 7/14/2023

This will work on a SRW F350 with factory overload

Was this answer helpful? 0 of 0 Found Helpful.

Answer provided by: Frank Delmas (10/10/2023)

Submit an answer

I’ve got a 4 inch BDS radius arm kit on my 2020 f-350. So it has 4 inch blocks in the rear. As well as the overload leafs that come factory. I assume those will have to come off? Will this still work with what I have? And do I need to buy new u-bolts? If I do, do y’all sell some that will work?

Asked by: Ryan Johnson - 1/31/2022

These leaf springs are compatible with the factory leaf pack. However, we can't guarantee whether or not you'd need new U-bolts with a BDS lift kit. We have not tried the combination of ourselves. Depending on the specific BDS kit, you may need longer rear shocks. Your best bet would be to give us a call directly at 623-434-5277 or email us at [email protected].

Was this answer helpful? 0 of 0 Found Helpful.

Answer provided by: Jason@Stage3 (2/1/2022)

Submit an answer

Will this work with the 2020/22 model F-350? I don’t see a 3 or 4” block for the 8’ bed, two piece drive shaft so I was going to try this add-a-leaf option.

Asked by: Aaron - 8/18/2021

Auto Spring has confirmed fitment up to the 2020 model year F350s, but not up to 2022 (though it's likely they just have not done their own test-fit as of yet).

Was this answer helpful? 1 of 1 Found Helpful.

Answer provided by: Jason@Stage3 (8/19/2021)

Submit an answer

is this kit one spring per side. does the spring go in the middle of factory springs.

Asked by: geofarmer - 11/18/2019

This particular kit is one spring per side of your truck, and the springs install into your Super Duty's factory leaf pack.

Was this answer helpful? 0 of 0 Found Helpful.

Answer provided by: Jason@Stage3 (11/19/2019)

Submit an answer

Have Questions?

Stage 3 Rewards is our free customer loyalty program. Earn points on every order and redeem for cash off your next purchase.

100 bonus points just for signing up ($2 to start)
1 point per dollar spent on every order (2% back)
Bonus points for reviews, birthdays, and social shares
Redeem for $10, $20, $30, $50, or $100 off coupons

See full program details

WARNING: Cancer and Reproductive Harm

This product can expose you to chemicals including those known to the State of California to cause cancer and birth defects or other reproductive harm.

For more information, visit [www.p65warnings.ca.gov](https://www.p65warnings.ca.gov).

2010-2020 F350 Auto Spring Rear Add-a-Leaf Kit | AS350AAL

Increase Rear Ride Height and Towing Capability for your Super Duty

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

Will this kit work on a 2015 f350 SRW with factory overload springs?

I’ve got a 4 inch BDS radius arm kit on my 2020 f-350. So it has 4 inch blocks in the rear. As well as the overload leafs that come factory. I assume those will have to come off? Will this still work with what I have? And do I need to buy new u-bolts? If I do, do y’all sell some that will work?

Will this work with the 2020/22 model F-350? I don’t see a 3 or 4” block for the 8’ bed, two piece drive shaft so I was going to try this add-a-leaf option.

is this kit one spring per side. does the spring go in the middle of factory springs.

Pick Up Where You Left Off