ArticlesWrangler JK
Jeep Wrangler JK on 37s: What It Takes, From 946 Real Builds
Yes, a JK can run 37s, and 946 builds show what it took.
By REVKIT · 8 min read · Updated November 2026
Ask a forum whether a JK can run 37s with no modifications and you'll hear no a lot. Sometimes you'll get made fun of for asking what everyone asks. That's discouraging, and it's part of why REVKIT exists: so you can just look.
So we looked. There are 946 public Jeep Wrangler JK builds on 37s on REVKIT, and the short answer is yes, a JK can run them with some work. Done right, it takes a lift, shocks and gears, and if the Jeep is going on the trail, stronger axle shafts. How far you go depends on what the Jeep is for, so the 13 builds below are split that way: built for the look, and built to wheel.
If you're on 33s or smaller, start with the list below. If you're moving up from 35s, Hell Hound JKU made that same trip. If you already run 37s, read the parts lists for what yours is missing.
What a JK needs to run 37s
This is the order we'd go in to do it once. The shares come from those 946 builds. These are lists owners chose to fill in, so a part that isn't listed may still be on the Jeep.
- A lift, at least 2" and ideally 3.5". Which one is wide open, from a budget lift on up. Of the JKs on 37s that list a lift, 58% list 3.5" to 4". The builds below use Mopar, JKS, Synergy, Rubicon Express, Rough Country, Pro Comp, Rock Krawler and MetalCloak.
- Shocks to go with it.
- Gears, the big one. 51% of the 946 list a ratio of 4.56 or deeper, against 19% of JKs on 35s.
- Axle shafts. 28% list upgraded ones, against 6% on 35s. That's about four times the 35s share, the biggest step of the three.
- Driveshafts, maybe. A bigger lift calls for a longer, stronger one. Some Jeeps don't need it, but 46% list one, against 20% on 35s, so think about it before you buy.
Around those five, the lists pick up parts tied to fit. Here they are as shares of the 946, next to JKs on 35s. The same caution applies, and a Rubicon's factory flares won't show.
- Steering upgrades (tie rod, drag link, steering kit or box). 45%, against 21%.
- Aftermarket fenders (not flares or inner fenders). 31%, against 21%.
- Tire carrier. 44%, against 37%.
- Ball joints. 17%, against 9%.
- Bump stops. 9%, against 3%.
- Wheel spacers. 5%, the same on both.
Close to half list a steering upgrade, and wheel spacers don't move at all. The Mistress JK, further down, lists hydraulic assist on its steering.
Will 37s rub on a JK?
Yes, they can. Trimming the inner fenders is usually needed, and it's an easy job. Owners don't write about rubbing, so that's us talking, not the lists. What the lists do show is that 25% of JKs on 37s list aftermarket inner fenders.
Backspacing is the other fit number, and few owners list it, about 3% of JK lists. Of the few who do, about half run about 4.5", usually a 17x9 with a -12 offset. About 3.5" is next, with a -38 offset. That's what's on the lists, not a recommendation.
Do you need to regear for 37s?
Not to make it run, but we'd do it. You can put 37s on a small lift, say 2", skip the regear and it'll run. The Jeep will hunt for gears, and you'll feel it. We think that catches up with you, and that you'll wish you had regeared.
That's why gears are the big one on our list. The builds go both ways, though. Greyback took its 4.10s to 5.13s on a 2" lift, TheMarmotJK lists 5.38s, and The Green Goat still shows 4.10s on 37s.
What we think
Gears aren't the only thing to plan for. The rest of this is our opinion too. It's practical, and it isn't a verdict on any setup for the road.
The bigger tire carries more weight and puts more stress on everything, and it finds your weakest part quickly. Coming off a stock tire, on the trail, we'd bet on the axle shafts: climbing an obstacle, spinning the tires, bouncing the Jeep. That goes especially for a Sport, which came with a lighter Dana 30 front axle where a Rubicon got a Dana 44.
A show Jeep is different. If it isn't going wheeling, it can stay near stock, but watch the driveshaft angle.
JKs on 37s built for the look
Some people want the look, and there's nothing wrong with that. Every spec line here gives the lift, and where a build has both, you get one photo standing and one showing the articulation.
The matched one
The coils are the same teal as the graphics. There's no gear ratio on the list, and here's what the owner still has planned.
Upgrading the springs, shocks, rear bumper then lastly the long overdo axle swap and re-gear.
The tribute
Black and gold, as a tribute to Smokey and the Bandit. The wheels and springs are gold too. Its drivetrain and brake entries say stock, and so does the engine, apart from a tuner, which is what our show Jeep advice looks like on a real parts list.
The clean one
This is a Sport, and it's the owner's fourth Wrangler and by far their favorite. The list shows a 3.5" lift, Fox shocks, 18" wheels and the tires, with no gears or axle work.
Just trying to create a clean looking build with quality parts without losing my home.
The one that gets dirty
The owner always wanted an all-white Jeep. When they wrote about it, 4.88 gears were on the list of upcoming mods.
Stays clean but don't let it fool you, there's enough sass when it's time to get dirty.
The small lift on show
A look build can still regear. You see the graphics first, and many of its photos come from shows, but the list has 4.88 gears, Fox 2.0 shocks and Synergy inner C gussets, on a lift close to our minimum.
JKs on 37s built to wheel
Most of these go after the harder trails you see on social media. We'll start with the smallest lifts, because that's usually the question.
The 2" answer
A 2" lift is all this two-door runs, and there's a long list behind it. It shows the 4.10s regeared to Yukon 5.13s in both axles, plus MetalCloak parts to add flex and wheel travel. The owner has used it on trails from Utah to Missouri.
The Sport on coils
Two doors, a 6-speed manual, Fox 2.0 shocks, a Yukon rear locker and 4.88s. The owner's whole About is one line. We don't know what "that" was, and we like it anyway.
"There's no way you're making that" ha.
Atlas_82 JK's owner
The budget one
The owner calls this "modded on a budget," with a mild spring lift and a list of separate parts. It still shows 4.10s, the ratio a Rubicon came with, behind a 6-speed.
I want her to be able to climb effortlessly, cruise comfortably, and explore reliably without dropping $ on "kits".
The smallest lift here
This is the closest build here to the setup we warned about, with no gears or axle shafts on the list. That may only mean nobody typed them in. Here's the owner's report:
Rides on 37's daily!
The long Sport list
Move up to 3.5" and the lists get longer. This Sport lists JK Dana 44s front and rear, Yukon 5.38 gears, Yukon chromoly axle shafts, Adams 1310 driveshafts, Eaton lockers, and sleeves and gussets on the front axle.
The Rubicon that kept going
A Rubicon starts with Dana 44s, and this owner still listed Revolution 5.13s, chromoly rear shafts and RCV front shafts. They started upgrading about a week after driving it home.
I never knew how addicting it would be to own/customize/wheel a Jeep, and now I am hooked!
The honest one
If you want our weakest part point from an owner, here it is.
Building as I break things.
They don't say what broke, but the list now has a G2 Core 44 front axle, 35-spline shafts front and rear, and hydraulic assist on the steering.
The one that came up from 35s
It all started with a mild Mopar 3" lift and 35s.
Now the list has 5.13 gears, RCV front axles, Ten Factory chromoly rears, Adams driveshafts front and rear, and trusses on both axles. That's the far end of what going to 37s can turn into, and the 3.5" lift is the same number many of these owners chose.
Daily driving a JK on 37s
The height and the stance change first. The Jeep looks different, and going from stock to 37s, that's the part we think you'll love, because it's the look you were after. silvertron_jku's owner called it by far their favorite of four Wranglers, and ESDEATH's owner is "hooked."
You'll stop for gas more. If you're going to 37s, you're not trying to save on gas. You want the look and the performance, so we wouldn't let that part talk you out of it.
When you're ready to pull the trigger
Keep this page open, or send it to yourself. When the day comes, find the build closest to your Jeep and to what you want it to do, open its parts list and read it top to bottom. If you're already on 37s, look for the line yours doesn't have.
Then pass it to the next person who asked about 37s on a stock JK and got told no.
How we picked these
These 13 come from REVKIT's public JK builds on 37s. We wanted photos that show the tires, a lift on the list and, where a build had them, a standing shot and a flexed one. The gear share starts at 4.56, because 3.73 and 4.10 came from the factory. Everything here is as owners listed it when they wrote.