Lowered 2015 F150
They don't ride too horrible. Quite a bit firmer than stock but not harsh. Their 4 inch rear kit with the add-a-leaf is pretty rough though. That's why I removed my kit. I'll be going with the Belltech when I get my truck back.
Chris, its hard to get responses sometime on here. I found it for you and me! 
Sadly, looks like there is still some drilling involved though.
Lawrence
Well.... not quite the same...BUT Im still looking. lol
http://www.sdtrucksprings.com/index....ducts_id=32543
Edit AGAIN.... it is no drilling. Here is more info and more choices... 2K lbs kit or the 5K lbs kit
https://www.airliftcompany.com/vehic...wheel-drive/#l

Sadly, looks like there is still some drilling involved though.

Lawrence
Well.... not quite the same...BUT Im still looking. lol
http://www.sdtrucksprings.com/index....ducts_id=32543
Edit AGAIN.... it is no drilling. Here is more info and more choices... 2K lbs kit or the 5K lbs kit
https://www.airliftcompany.com/vehic...wheel-drive/#l
Hi Guys,
I apologize that it's been so long since responding. I run a fabrication shop and it's super busy 98% of the time and very busy the other 2%.
It's been about a year that I've had the airbag system mounted on my personal truck and it's been working out great. I haven't pushed the truck to the max yet, but I've had about 2500 pounds in the bed and towed a trailer with a weight of about 4500 so far and have had no issues. I went with AirSlammit airbags and installed an on-board compressor, although I also plumbed in a Schrader valve for the unlikely event that the compressor fails.
I have the Crown Suspension 3/5" kit installed, being springs in the front and a flip kit in the back. Also, I installed a set of super lower clearance "button" style bump stops. When I'm riding around with nothing in the bed, I run about 8 PSI and it gives the truck a nice ride without bottoming out in the rear. When I'm hauling a moderate load (800-1000 lbs), I bump it to 30-35 PSI and if I have a full load, I bump it all the way up to 65 PSI. The bags have something like a 120 PSI burst rating, so it's completely safe.
For those of you who have not read all the info I've posted, which is actually sort of tough to find on this forum, here are all the details again of what I had to do:
Crown Suspension 3"/5" drop springs and rear axle flip kit
Rear drive shaft shortened 1.125" (HAS to be done)
Custom built rear airbag brackets that require NO HOLES to be drilled (completely clamp-on)
Custom lower air-bag mounting brackets that HAVE to be welded on (no clearance for a bolt-on design)
Custom built on-board compressor mounting bracket that uses factory Ford accessory mounting holes and T-nuts (captured nuts - same as used for the factory side bed step - compressor is mounted high under the front left bed rail)
The kit that I assembled is working great; there's no other way to say it. Also, when you pull up to a ricer, and hit the air release valve, it's very funny to see their reaction.
I've had a few people inquire about the mounting brackets I have on my truck. The name of my shop is Silver Lake Fabrication and we do not currently have this kit listed. We don't typically sell car and truck parts due to liability concerns, but I've thoroughly tested this kit and have had not problems. The only concern with our mounting brackets is that they were made to fit my personal truck. As you can see in the pictures that we posted on here of the brackets themselves, they have a few holes in them. That is not because you have to drill holes in your frame, but because I had to be able to bolt everything onto the frame that came bolted to the frame from the factory. It's actually amazing how the frames on these trucks have so many holes; it's like Swiss cheese. All the holes shown in the brackets are to allow for the factory parts to install in the same way (just spaced 1/4" out).
If you're interested in purchasing brackets like I have installed on my truck, please call Silver Lake Fabrication at 603-630-5658. We have all the files and diagrams for making the kit again, but please be aware that you may have to drill additional holes in the brackets to make clearance for welds on the frame or additional accessories your F150 may have mounted on the frame that my truck does not. We are not a Ford dealer, so I don't have access to every version of the truck, just mine.

If you want to see further write-ups on this kit, type "SLFwelder" into Google and do an image search. Those pictures will bring you to the other write-ups I have posted on this F150 forum.
I hate to say it folks, it's unlikely that I'll be answering further questions on the forum. As you can see from the year it took to get an answer from me here, I just don't have time to read through the forums.
Thank you,
Aaron Leclerc
Silver Lake Fabrication
603-630-5658
www.silverlakefabrication.com
Chris, its hard to get responses sometime on here. I found it for you and me! 
Sadly, looks like there is still some drilling involved though.
Lawrence
Well.... not quite the same...BUT Im still looking. lol
http://www.sdtrucksprings.com/index....ducts_id=32543
Edit AGAIN.... it is no drilling. Here is more info and more choices... 2K lbs kit or the 5K lbs kit
https://www.airliftcompany.com/vehic...wheel-drive/#l

Sadly, looks like there is still some drilling involved though.

Lawrence
Well.... not quite the same...BUT Im still looking. lol
http://www.sdtrucksprings.com/index....ducts_id=32543
Edit AGAIN.... it is no drilling. Here is more info and more choices... 2K lbs kit or the 5K lbs kit
https://www.airliftcompany.com/vehic...wheel-drive/#l
Hi Guys,
I apologize that it's been so long since responding. I run a fabrication shop and it's super busy 98% of the time and very busy the other 2%.
It's been about a year that I've had the airbag system mounted on my personal truck and it's been working out great. I haven't pushed the truck to the max yet, but I've had about 2500 pounds in the bed and towed a trailer with a weight of about 4500 so far and have had no issues. I went with AirSlammit airbags and installed an on-board compressor, although I also plumbed in a Schrader valve for the unlikely event that the compressor fails.
I have the Crown Suspension 3/5" kit installed, being springs in the front and a flip kit in the back. Also, I installed a set of super lower clearance "button" style bump stops. When I'm riding around with nothing in the bed, I run about 8 PSI and it gives the truck a nice ride without bottoming out in the rear. When I'm hauling a moderate load (800-1000 lbs), I bump it to 30-35 PSI and if I have a full load, I bump it all the way up to 65 PSI. The bags have something like a 120 PSI burst rating, so it's completely safe.
For those of you who have not read all the info I've posted, which is actually sort of tough to find on this forum, here are all the details again of what I had to do:
Crown Suspension 3"/5" drop springs and rear axle flip kit
Rear drive shaft shortened 1.125" (HAS to be done)
Custom built rear airbag brackets that require NO HOLES to be drilled (completely clamp-on)
Custom lower air-bag mounting brackets that HAVE to be welded on (no clearance for a bolt-on design)
Custom built on-board compressor mounting bracket that uses factory Ford accessory mounting holes and T-nuts (captured nuts - same as used for the factory side bed step - compressor is mounted high under the front left bed rail)
The kit that I assembled is working great; there's no other way to say it. Also, when you pull up to a ricer, and hit the air release valve, it's very funny to see their reaction.
I've had a few people inquire about the mounting brackets I have on my truck. The name of my shop is Silver Lake Fabrication and we do not currently have this kit listed. We don't typically sell car and truck parts due to liability concerns, but I've thoroughly tested this kit and have had not problems. The only concern with our mounting brackets is that they were made to fit my personal truck. As you can see in the pictures that we posted on here of the brackets themselves, they have a few holes in them. That is not because you have to drill holes in your frame, but because I had to be able to bolt everything onto the frame that came bolted to the frame from the factory. It's actually amazing how the frames on these trucks have so many holes; it's like Swiss cheese. All the holes shown in the brackets are to allow for the factory parts to install in the same way (just spaced 1/4" out).
If you're interested in purchasing brackets like I have installed on my truck, please call Silver Lake Fabrication at 603-630-5658. We have all the files and diagrams for making the kit again, but please be aware that you may have to drill additional holes in the brackets to make clearance for welds on the frame or additional accessories your F150 may have mounted on the frame that my truck does not. We are not a Ford dealer, so I don't have access to every version of the truck, just mine.

If you want to see further write-ups on this kit, type "SLFwelder" into Google and do an image search. Those pictures will bring you to the other write-ups I have posted on this F150 forum.
I hate to say it folks, it's unlikely that I'll be answering further questions on the forum. As you can see from the year it took to get an answer from me here, I just don't have time to read through the forums.
Thank you,
Aaron Leclerc
Silver Lake Fabrication
603-630-5658
www.silverlakefabrication.com
What did you do to get to 5” in the rear.
Here is the updated picture of how the truck sits today. 2"/5" drop
Attachment 496777
Looks great in my opinion. I wish I would have done this in the first place...I would've saved a lot of money. 😑
Attachment 496777
Looks great in my opinion. I wish I would have done this in the first place...I would've saved a lot of money. 😑

