New: Ultimate Dana 60 Semi-Float Rear Axle for JT Gladiator

[JoKer]

https://spicerparts.com/jeep/semi-float-axle?utm_campaign=sp_performance_2025

Semi-Float Axles for the Jeep Wrangler JK, JL and the Gladiator JT from Dana

PROBLEM
"I want to upgrade to an Ultimate Dana 60® axle, but it has an 8-bolt wheel-end pattern while my stock semi-floating axle has a 5-bolt pattern; I’d have to invest in a brand-new 8-bolt wheel and brake package!"

SOLUTION
The Ultimate Dana 60® Semi-Float Axle delivers all the benefits—like Spicer® ring and pinion gearing, heavy-duty brackets, and more—and all the convenience of adhering to a semi-floating axle design: get a direct-fit, bolt-in solution and reuse your wheels and brakes.

For a direct-fit solution that’s built for superior strength, Dana now offers the Ultimate Dana 60® Semi-Float Axle for the Jeep Wrangler JK, JL and the Gladiator JT. You can get all the benefits of the celebrated Ultimate Dana 60® axle—like Spicer® chromoly steel axle shafts, Spicer ring and pinion gearing, a nodular iron diff cover, heavy-duty brackets, and more—while enjoying optimum weight capability.

If you’re upgrading from a stock semi-float, you can reuse all of your wheels and brakes! These semi-float axles are also a perfect choice to match up with an Ultimate Dana 44™ front axle, which allows you to reuse factory 5-lug hubs. Get added strength and peace of mind when navigating extreme terrain with the Ultimate Dana 60® Semi-Float Axle.

Sponsored

 

[ScottBeach]

This is very cool. Is there a spec sheet somewhere? I didn't find in the link.

 

[Aberk]

Just curious what size tire these would max out at.

 

[LouisvEarlleJT]

Hm, I'd figure a brake swap would be in the cards for people doing this kind of mod, would it not?

 

[ScottBeach]

There are upgrade kits for the stock fit brakes on market. I would guess that would do.

 

[cmb396]

No 5:13 otpion?

 

[Sweetums]

https://spicerparts.com/jeep/semi-float-axle?utm_campaign=sp_performance_2025

Semi-Float Axles for the Jeep Wrangler JK, JL and the Gladiator JT from Dana

PROBLEM
"I want to upgrade to an Ultimate Dana 60® axle, but it has an 8-bolt wheel-end pattern while my stock semi-floating axle has a 5-bolt pattern; I’d have to invest in a brand-new 8-bolt wheel and brake package!"

SOLUTION
The Ultimate Dana 60® Semi-Float Axle delivers all the benefits—like Spicer® ring and pinion gearing, heavy-duty brackets, and more—and all the convenience of adhering to a semi-floating axle design: get a direct-fit, bolt-in solution and reuse your wheels and brakes.

For a direct-fit solution that’s built for superior strength, Dana now offers the Ultimate Dana 60® Semi-Float Axle for the Jeep Wrangler JK, JL and the Gladiator JT. You can get all the benefits of the celebrated Ultimate Dana 60® axle—like Spicer® chromoly steel axle shafts, Spicer ring and pinion gearing, a nodular iron diff cover, heavy-duty brackets, and more—while enjoying optimum weight capability.

If you’re upgrading from a stock semi-float, you can reuse all of your wheels and brakes! These semi-float axles are also a perfect choice to match up with an Ultimate Dana 44™ front axle, which allows you to reuse factory 5-lug hubs. Get added strength and peace of mind when navigating extreme terrain with the Ultimate Dana 60® Semi-Float Axle.

Very nice, but kind of a shame it's not a full-float.

 

[Zachanadandy]

Very nice, but kind of a shame it's not a full-float.

Full float 60s have been available, but at that point you're going to 8 lug. This is the in-between option that will give you plenty of strength for 40s without going full front and rear tons/8 lug/ etc.

 

[Ericshere03]

Full float 60s have been available, but at that point you're going to 8 lug. This is the in-between option that will give you plenty of strength for 40s without going full front and rear tons/8 lug/ etc.

Not to mention weight … those full floaters add a lot of weight at the worst possible location …

 

[Zachanadandy]

Not to mention weight … those full floaters add a lot of weight at the worst possible location …

I'm not sure how much lighter the semi float is though, and the full float will have larger brakes. Benefits and drawbacks of going either way.

 

[LouisvEarlleJT]

I'm not sure how much lighter the semi float is though, and the full float will have larger brakes. Benefits and drawbacks of going either way.

It's not, at least if it's similar to what a GM 14-bolt full vs semi float. 8-lug semi-float approximate weight: ALOT (same brakes btw in that application)

8-bolt full float approximate weight: ALOT + a bit more

 

[aFatBird]

Other companies offering semi float 60 rears don't advise running 40s on them. Both Fusion and Currie only recommend up to a 39"

 

[Chance575]

Kinda waste of money with these, you’ll get some more strength but not a ton. Full float is the way to go, more strength, bigger brakes, and ability to pull and change the axle on the ground without pulling a wheel

 

[Jteakus]

Rating probably closer to a 38" tire. Flange bending is real concern. If you are going with a tire 38+ full float is the way to go and a brake upgrade should be on the list along with eight lugs to retain the mass.

 

[PuddleJumper]

Massive ones since people have been running 42s on the OE D44 for years now

Sponsored