Heavy-Duty brakes vs Rubicon brakes

[Tdkrum5]

My unlimited Altitude came with Heavy-Duty brakes is there and difference between these and the Rubicon brakes? I am looking for Rubicon axles and wondering if my brakes will work

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[jhackathorne]

They’re the same brakes if they are the HD Brakes.

 

[AnnDee4444]

They’re the same brakes if they are the HD Brakes.

Apparently the rear brakes are larger
https://www.jlwranglerforums.com/fo...he-high-altitude-wrangler.57219/#post-1235120

 

[Tdkrum5]

Apparently the rear brakes are larger
https://www.jlwranglerforums.com/fo...he-high-altitude-wrangler.57219/#post-1235120

AnnDee, bigger on the High Altitude or the Rubicon? What about the unlimited Altitude are they the same as the Rubicon?

 

[AnnDee4444]

AnnDee, bigger on the High Altitude or the Rubicon? What about the unlimited Altitude are they the same as the Rubicon?

Bigger on the High Altitude.

Sorry didn't realize you were asking about a non-High Altitude (and I didn't even know it existed). Disregard my first post.

 

[Tdkrum5]

They’re the same brakes if they are the HD Brakes.

Thanks, When i looked this up on Mopar parts it says the HD brakes are only for the sport and Sahara. Does not say they work on the Rubicon.

 

[Storey21]

I’ve been researching brakes lately because I need to do mine. Found some interesting things. Sport models are BRY, Willys/Sahara/Rubicon are BR6. High altitude models like yours are a BR5 brake code.

 

[Kijijeep]

The heavy duty brakes on my Xtreme Recon have "392" embossed on the rear caliper brackets. Take a look and see if it says that on yours.

 

[Jeepstrangler]

I’ve been shopping for brakes as well. Everything I find for my Rubicon is the same size rotor as I currently have 330mm front and 342mm Rear. All the brake kits I seem to find aren’t any bigger or better. At best you get a painted caliper and cross-drilled rotors. If anyone has found a better kit to upgrade a rubicon id love to hear from you. I’ll look into the high altitude if the rotors are bigger.

 

[Zandcwhite]

I’ve been shopping for brakes as well. Everything I find for my Rubicon is the same size rotor as I currently have 330mm front and 342mm Rear. All the brake kits I seem to find aren’t any bigger or better. At best you get a painted caliper and cross-drilled rotors. If anyone has found a better kit to upgrade a rubicon id love to hear from you. I’ll look into the high altitude if the rotors are bigger.

https://www.powerstop.com/product/jeep-big-brakes/
343mm front rotors and 360mm rear. At $1,200 from 4wheelparts, it's definitely the cheapest big brake kit on the market. Alcon and willwood have even better kits, but you're looking at 2-5× that price.

 

[AcesandEights]

Per Stellantis:

Sport
Front: 330mm x 24mm
Caliper: 48mm (1.88")

Rear: 328mm x 12mm
Caliper: 45mm (1.77')

Rubicon/Sahara
Front: 330mm x 28mm
Caliper: 51mm (2")

Rear: 342mm x 14mm
Caliper: 48mm (1.88") (Sahara, Sahara 4xe, Rubicon, Rubicon 4xe)

Sahara 4xe/Extreme Recon
Front Caliper: 51mm (2")

Rear: 345mm x 22mm
Caliper: 51mm (2")

Rubicon 4xe/Rubicon 392
Front Caliper: 51mm (2")

Rear: 350mm x 22mm
Caliper: 51mm (2")

I hope this helps and doesn't generate a bunch of questions.

 

[AcesandEights]

Here it is cut/paste, haha.

Front Rotor size and type 12.9 x .94 (330 x 24) vented rotor — Sport 12.9 x 1.1 (330 x 28) vented rotor — Sahara and Rubicon models Caliper size and type 1.88 (48) twin-piston floating caliper — Sport 2 (51) twin-piston floating caliper — Sahara, Sahara 4xe, Rubicon and Rubicon 4xe Rear Rotor size and type 12.9 x .47 (328 x 12) solid rotor — Sport 13.4 x .55 (342 x 14) solid rotor — Sahara and Rubicon 13.6 x .86 (345 x 22) vented rotor — Sahara 4xe, Xtreme Recon Pkg 14 x .86 (350 x 22) vented rotor — Rubicon 4xe, Rubicon 392 Caliper size and type 1.77 (45) single-piston floating caliper — Sport 1.88 (48) single-piston floating caliper — Sahara and Rubicon 2 (51) single-piston floating calipers — Sahara 4xe, Rubicon 4xe, Rubicon 392, Xtreme Recon Pkg

 

[Rodeoflyer]

Hmmm why would the 4XE use the same brakes as the 392? Is it that much heavier?

I've been satisfied with the Rubi brakes, even on 37'' tires. I swapped the factory fluid with Motul DOT 5.1 and that greatly increased pedal feel/firmness.

I'll be upgrading to these when the factory wears out.


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Z36 TRUCK & TOW BRAKE UPGRADE KIT

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[AcesandEights]

Yes, that's exactly why, it's heavier. It's the heaviest configuration, heavier than the 392.

Edited to add: Stellantis lists the 4xe as 5,100 lbs in the Sahara and 5,222 lbs in the Rubicon. The 392 curb weight is listed as 5,098.

 

[blnewt]

https://www.powerstop.com/product/jeep-big-brakes/
343mm front rotors and 360mm rear. At $1,200 from 4wheelparts, it's definitely the cheapest big brake kit on the market. Alcon and willwood have even better kits, but you're looking at 2-5× that price.

Too bad that kit has floating calipers, but nice to know that bigger rotors can be had for a reasonable price.

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