3.5" vs. 6" Lift: Which RAM 1500 Kit is Right for Your Build?
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You’ve decided a leveling kit isn't enough.
You want your 2009–2018 RAM 1500 to sit higher, look meaner, and clear big tires.
But when you look at Lift Kits, you see two very different types of products:
- The 3.5-inch Bolt-On Kit: Uses new struts and control arms. No cutting. $800.
- The 6-inch Suspension System: Uses drop crossmembers and new knuckles. Requires cutting the frame. $1,500+.
Which one do you need?
If you just want to run 33s or 35s and keep the truck reversible, the 3.5-inch kit is perfect—as long as it includes new Upper Control Arms.
If you want to run 37s or want the ultimate "Monster Truck" look, you have to commit to the 6-inch drop bracket kit.
In this guide, we break down the installation differences, tire clearances, and "Ball Joint" safety rules for lifting your 4th Gen RAM.
Compare Lift Kit Styles
Height, Difficulty, or Performance?
|
Lift Height |
Components |
Installation |
Best For |
|
3.5" Bolt-On |
Struts & UCAs. New Control Arms fix angles. |
DIY Friendly. No cutting required. |
35" Tires. Aggressive stance without cutting the frame. |
|
4.0" Suspension |
Crossmembers & Knuckles. Drops the diff. |
Pro Install. Requires cutting frame. |
35" Tires. Perfect geometry & factory ride quality. |
|
6.0" Suspension |
Full Drop System. Massive clearance. |
Pro Install. Requires cutting frame. |
37" Tires. Maximum height & "Show Truck" look. |
|
Air Ride Links |
Sensor Rods. Tricks the computer. |
Easy. Snaps onto sensors. |
Rebel/Limited. Lifting factory air suspension 1-2". |
Frequently Asked Questions (Lift Kits)
Can I run 37-inch tires on a 4-inch lift?
It depends.
- 6-Inch Lift: 37s fit easily with minor trimming.
- 4-Inch Lift: 37s will likely rub the bumper and fender liner unless you have a high-clearance bumper and correct wheel offset. We recommend sticking to 35s on a 4-inch lift for a rub-free ride.
Why do 3.5-inch kits need new Control Arms?
The factory upper control arms on the RAM 1500 are short and use a weak ball joint. If you lift the truck past 2.5 inches, the angle becomes too steep, and the ball joint can pop out of the socket. Kits from ReadyLIFT and Rough Country include heavy-duty tubular control arms to fix this angle and keep you safe.
What is the difference between Rough Country and BDS?
- Rough Country: The value king. Great for daily drivers and light trails. Uses spacer/strut combos to keep costs down.
- BDS Suspension: The premium choice. Offers a "No Fine Print" lifetime warranty (even if you break it off-road). Uses high-end Fox Shocks and beefier crossmembers. If you have the budget, BDS is the gold standard.
Go big. Drive safe.
Clear 35s or 37s with a geometry-corrected lift kit. Shop our verified collection of 2009–2018 RAM 1500 Lift Kits.