Aim/DJM lowering kit thread
Posting Guru
Joined: Jul 2013
Posts: 1,685
Likes: 2
From: Oregon
Is it just an axle flip? If so then the axle is just moved from the bottom to the top while maintaining the original pinion due to the bracket that positions the axle on top of the springs. Look at the yellow piece that saddles the axle tube. I hate the insert on this site.
http://www.classicshoptalk.com/attac...5&d=1338921462
http://www.classicshoptalk.com/attac...5&d=1338921462
Fleet Owner
Joined: Dec 2009
Posts: 20,678
Likes: 83
From: NorCal
hey guys called up djm suspension the other day and when I asked the guy about pinion shims he said they did not have them and that I don't need them I am almost sure i told him my truck is a longbed I am confused now some of the guys on here say it should be at original specs for the pinon angle I don't want vibration issues I want to do it right first time around anyone on here ever done the front and back djm drop on a longbed thanks in advace for any and all advice
Shims are required when flipping only the front leaf spring hangers because only one end of the leaf spring changes position. In fact, if you actually measured before and after a hanger flip you will find that the axle moved forward by a fraction of an inch and results in the pinion angle pointing upwards. DJM's system raises both ends of the leaf spring. Therefore, the axle maintains its relative position before and after the parts are installed.
Laughing Gas
Joined: Oct 2013
Posts: 947
Likes: 6
From: Manitoba, Canada
hey guys called up djm suspension the other day and when I asked the guy about pinion shims he said they did not have them and that I don't need them I am almost sure i told him my truck is a longbed I am confused now some of the guys on here say it should be at original specs for the pinon angle I don't want vibration issues I want to do it right first time around anyone on here ever done the front and back djm drop on a longbed thanks in advace for any and all advice
Search Results pinion
They have 2,4 and 6 degree shims. The bolt they supply is nice too because it's got a longer head to make up for the increased thickness with the shim added. (By the way AIM supplies the shim with their kit. Check the picture earlier somewhere in this thread.) As for how much shim you need to measure your pinion angle before you start, then check it afterward to determine how much shim you need. I estimated and got the 6 degree shim but I haven't got my truck box reinstalled yet as it's still getting painted. Pinion angle needs to be measured with the weight on the wheels.
Laughing Gas
Joined: Oct 2013
Posts: 947
Likes: 6
From: Manitoba, Canada
Same principle though HIO and the rear kits are similar if not the same. I put the DJM system on mine. It doesn't drop the axle evenly. There's no room to drop the back much so most of the drop has to be accomplished with the front hanger bracket.
New User
Joined: Feb 2016
Posts: 3
Likes: 0
Yes, they have changed their name several times over the last few years.
Chasis Tech, AIM, Airbagit...etc.
I'm happy with the quality of the products, they just made a mistake when shipping me my parts. (Twice) But, each time, they have taken care of me, in giving me an R.M.A. number, and paying for the shipping of the parts all over the country. I am just ready to have it finished is all. I have a friend who is letting me use his lift...so each day that goes by...I am delaying him getting stuff done, because my truck is in his way.
Chasis Tech, AIM, Airbagit...etc.
I'm happy with the quality of the products, they just made a mistake when shipping me my parts. (Twice) But, each time, they have taken care of me, in giving me an R.M.A. number, and paying for the shipping of the parts all over the country. I am just ready to have it finished is all. I have a friend who is letting me use his lift...so each day that goes by...I am delaying him getting stuff done, because my truck is in his way.
They usually change names due to banckrupcy I thought. Seemed to me DJM was a little better in quality but i don't know anything yet, just looking on here for details before I start mine.
FTE Stories
Ford Trucks for Ford Truck Enthusiasts
Top 6 Best Deals Available on New Fords & Lincolns Right Now
Brett Foote
This Hennessey Takes the Expedition Tremor's Off-Roading Capability to the Next Level
Verdad Gallardo
Top 10 Fords at 2026 Carlisle Ford Nationals
Joe Kucinski
3 Best / 3 Worst Parts of Modern Ford Ownership
Brett Foote
10 Amazing Upgrades That Solve Common Ford Truck Owner Headaches
Pouria Savadkouei
Every 2026 Ford Engine Explained
Brett Foote
10 Ugly Ford Trucks That We Still Kinda Love
Joe Kucinski
10 Things Every Truck Owner NEEDS (2026 Edition)
Michael S. Palmer
Rezvani's Latest Post-Apocalyptic Monster Is a Ford F-150 Raptor Underneath
Verdad Gallardo
Laughing Gas
Joined: Oct 2013
Posts: 947
Likes: 6
From: Manitoba, Canada
No need to change your coil springs unless you need new ones. Replace with stock spec.
Senior User
Joined: Aug 2015
Posts: 215
Likes: 3
From: Union City, CA
Detroit spring has new springs and offers dropped configurations. I have their 1" drop springs myself https://www.eatondetroitspring.com/
New User
Joined: Nov 2010
Posts: 16
Likes: 0
Detroit spring has new springs and offers dropped configurations. I have their 1" drop springs myself https://www.eatondetroitspring.com/
Do you have any pics of your truck with the 1" lowered spring installed?
Senior User
Joined: Feb 2015
Posts: 294
Likes: 1
Bending I beams is to correct camber which changes due to shorter springs. Factory beams can be bent, if you can find a shop with the equipment and knowledge to do it. It doesn't make the truck lower, merely corrects the alignment after you lower it with springs. Without correction, the tires will lean in at the top, look goofy, and wear your tires out quickly.
New User
Joined: Nov 2010
Posts: 16
Likes: 0
Sounds good! I'm still toying with the idea of cutting coils with drop beams or doing air bags with drop beams. I like the idea of being able to drop the truck really low when parked, but I don't want to cut the truck up.