If you have tow, you have dual piston or "heavy duty). If you don't have the tow package then you don't.


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I don't remember seeing that in the.... many... towing discussions we've had. If tow package gets heavy duty brakes, that's a big thing and not something you can poo poo away with drive ratio or mitigate by adding a trans cooler (if even possible).

 

Tow package gets dual piston front calipers. The TH may also get them as part of the TH trim. I'm not 100% on that. But I do know they are part of the tow package.


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Heavy-duty brakes make sense for tow package. I don't really see the benefit/requirement beyond standard on 4x4.

I wonder if heavy duty front and rear calipers are independent of each other depending on driveline and tow package.

 

OP mentionned rear rotors, and also has "Tow" in his signature, along with "TH" and 3.2. So we know it's 4X4, with Tow.

I remember seeing a thread about aftermarket brakes on here before (maybe Len's, maybe another...) and the question about HD brakes was certainly a head scratcher... and so was what is what with Mopar brake part numbers and with the aftermarket...

 

I personally bought the HD or dual piston kit. Fit just fine. Actually spent a portion of the day looking for new brake pads because after 11k miles mine need replaced.


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I wonder if 4x4 get it because of 4 Low and "Hill Descent." Might be to stop the brakes from over heating while it holds such a low speed going downhill?

 

Are there HD brakes at the back too ?

 

rear brakes seem to be the same on all models from what i can tell

 

If I remember correctly from when I built my Cherokee, the HD brakes came with the tow package but only for the V6 models, the i4 misses out on some of the tow package upgrades the V6 got.

 

That's my guess too. My research has found the rear brakes are the same regardless of drivetrain or trim. It's the fronts that are different.


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Get the Build Sheet from your Jeep dealer. It will have the Sales Code for your brakes.
BR6 High Performance (LX) Jeep Grand Cherokee for Export only.
BRF Disk brakes with ABS.
BRG Disk brake with ABS. (for 2014 Jeep Cherokee Trailhawk)
The pads are made by ADVICS.

 

This is weird, I just asked my dealer today when I had Hawkeye in for some rough shifts. They said I’ve got the single piston breaks. I’ve got the tow package on a TrailHawk.

I wonder if I can look it up somewhere by VIN. Now I don’t trust my dealer.

 

Next time you visit them, can you ask which calipers are single piston, front or rear ? Sounds like they were talking about the rear...

 

Do you have a 4 cylinder?


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Do you have a 4 cylinder?

His sig says 3.2L

Did the dealership talk about the front or rear calipers ? If his 2016 V6 TH with Tow does have single piston front calipers, then it's... game On !

 

2015 TH with V6 and tow
Dual front piston
==========
HD pads
Front: 68227573AC
Rear: 68225327AC
Fits Cherokee KL platform, 124 variations

 

They were likely mistaken. the HD brakes are tied to whether it is 4WD or not, thus ALL trailhawks have dual piston calipers (at least in the US, i can't see export-spec vehicles). the brakes are not tied to the tow package in any way.

i did notice one new thing i didn't notice before, however. the HD brakes are also tied to the V6 engine. that means that if your car has EITHER a V6 engine OR 4WD it has dual piston brakes in the front. the ONLY configuration that has single piston calipers are the 2.4 FWD, regardless of tow package (i ran a build sheet on a 2.4 FWD with and without tow and they each had single piston brakes).

ok, i think i'm done revising my answer now :laugh:

 

Thanks everyone, I decided when it's time, I'll order the dual piston kit anyway.

 

Does that work? Can you just swap from single to dual?

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having both 4WD and a V6, he shouldn't have a single piston caliper, he should have the dual.

 

i have 2015 cherokee north 3.2L 4x4 dealer says its BRG CODE daily driver...hope that can help anyone out...with dual piston fronts

 

So let's throw the 2019 into the mix. From the brochure:

BRAKE SYSTEM

Front 13 x 1.1 vented rotor with 2.36 single-piston floating caliper
13 x 1.1 vented rotor with 1.89 twin-piston floating caliper (available)

Rear 10.95 x 0.47 solid rotor with 1.5 single-piston floating caliper
12.6 x 0.47 solid rotor with 1.69 single-piston floating caliper (available)

So, front can be single or dual piston.
Rear is single piston only, but can have a bigger rotor and bigger piston.

I looked up part numbers for 2.0T, 2.4, and 3.2. All are identical, but I couldn't tell which trim each applied to.

Here's the weird part. I counted 4 separate Mopar part numbers for the rotors for the 2017 Cherokee across all trims. For the 2019 Cherokee, I counted 14! I have no idea how these various rotor part numbers are allocated.

 

When I ran track days with a 2007 Charger, the OEM vented rotors worked well enough (with upgraded pads and fluid) and were inexpensive, so we just treated them as a "wear item" like the pads and replaced them as-needed.

 

If Wilwood made a front BBK for the Cherokee, my guess it would be $1600 to $1900...StopTech, $2500...Brembo, $3200

 

Hey Mark,

I was reading through the earlier part of this post. You've been around the longest... Has anyone confirmed there are actually two different rear rotor sizes; a smaller one of 278mm and a larger one of 320mm for a 2.4/non-tow model? I saw @AZJeeper 's post about the 2019+ 2.4 Cherokee brochure had an option for 2 rear rotor sizes etc. but brochures don't always tell what actually made it to market. If there are two rear rotor sizes, I assume these would show up as unique part numbers on any of the MoparParts.com sites. Do you know if anyone has reported actually seeing unique part numbers for the rears in multiple sizes on any of the Mopar parts sites? Thoughts?

 

The 2019-2022 spec sheets shows two different size rear rotors AND pistons. I found at least two Mopar part numbers for brakes - 2014-2023 Jeep Cherokee - 4779886ac and 2014-2022 Mopar - 4779885ac, though they don't specify the size. Also, there are two more - 2015-2022 Mopar - 68242659ab and 2015-2023 Jeep Cherokee - 68243428ab, but they are listed as "not for sale". Rockauto shows THREE different size rotors for the 2019 - 278, 320, and 330! So that semi-confirms there are at least two sizes out there.

I did find this clue on Rockauto for some of the brake rotors: Rear; 320mm Rear Disc; Dual Piston Front Caliper. That leads me to believe if you have the dual-piston fronts, you have the larger rear rotor.

Still not exactly "confirmed", but almost.

 

Awesome and solid info. Niiiicccceee!!!

 

Yeah it's been a head scratcher for a long time. We even had a member on here (gone now) who was a sales manager at a big CDJR dealership and had been in service before ; he went hunting for 'the truth' on Cherokee brakes by digging into the system... and even he said it was confusing. Early on 'we' thought HD brakes were for Tow Package only, but found out later on that AWD came with it also. or was it AWD V6. Not clear. Best way to determine which brakes you need still remains a VIN check.

For rear rotors : 278 or 320mm. Rock Auto shows 278mm for the V6 too (FWD ??), not just the 2.4L. 330mm is probably fronts ?

What I find confusing still, when I look at what Rock Auto offers, is that you can have dual piston fronts with big rear disks and still not be HD brakes. I think... that HD brakes brings thicker (wider) front disks, but some vendors sell the same front rotors for HD or non HD... For pads , some vendors offer different front pads while others clearly list 'for HD and non HD'.

I think some folks have probably installed 'wrong brakes' over the years, meaning some brake manufacturers sell beefier HD parts and others don't (or, they sell beefy for non HD too and it fits regardless).

But what you have to get right are rotor size and caliper design (single or dual up front). Pads and rotor thickness are less critical (if you buy the wrong ones).

Bottom line : whichever brand of brake components you buy, check their fitment list for your situation. If you are unsure whether you have HD or non HD brakes, my advice is check with your dealer...

edit to rephrase

 

Just adding my observations as this is one of the first results that comes up when searching online about the topic. This has all been verified through AllDataDIY and the mopar store. The HD brake option appears to be synomous with the BRG brake code, when it comes to hardware fitment; looking at rotors, calipers, and pads.

​	BRF (Left / Right)​	BRG (Left / Right)​	HD (Left / Right)​
Rotors
Front​	4779884AC​	-​	-​
Rear​	4779885AC​	4779886AC​	4779886AC​
Calipers
Front​	68225169AC / 68225168AC​	68212011AA / 68212010AA​	68212011AA / 68212010AA​
Rear​	68225305AB / 68225304AB​	68225313AA / 68225312AA​	68225313AA / 68225312AA​
Pads
Front​	68225170AC​	68212327AD​	68227573AC**​
Rear​	68225301AB*​	​	68225327AC***​

* Rear pads do not indicate brake option codes
** Not for sale anymore on mopar store
*** Currently unavailable on mopar store, moparpartsgiant says this is discontinued

Rotors

Calipers

Pads

 

Just adding my observations as this is one of the first results that comes up when searching online about the topic. This has all been verified through AllDataDIY and the mopar store. The HD brake option appears to be synomous with the BRG brake code, when it comes to hardware fitment; looking at rotors, calipers, and pads.

​	BRF (Left / Right)​	BRG (Left / Right)​	HD (Left / Right)​
Rotors
Front​	4779884AC​	-​	-​
Rear​	4779885AC​	4779886AC​	4779886AC​
Calipers
Front​	68225169AC / 68225168AC​	68212011AA / 68212010AA​	68212011AA / 68212010AA​
Rear​	68225305AB / 68225304AB​	68225313AA / 68225312AA​	68225313AA / 68225312AA​
Pads
Front​	68225170AC​	68212327AD​	68227573AC**​
Rear​	68225301AB*​	​	68225327AC***​

* Rear pads do not indicate brake option codes
** Not for sale anymore on mopar store
*** Currently unavailable on mopar store, moparpartsgiant says this is discontinued

Rotors
View attachment 227759

Calipers
View attachment 227760

Pads
View attachment 227761

That's interesting. I've discussed the BRF vs BRG vs HD in other topics here since that post. My findings are similar, meaning BRG and HD have kinda melted into one over the years. Mopar had HD pads for a while, then not.

Some interesting observations from your findings :

• The rear pads. The 'without Heavy Duty' there means BRF, so for the smaller rotors. This implies that the other kit, for the 'with Heavy Duty Brake' application, is for BRG and HD, but we now know those two are essentielly the same.
• Front pads : we see 3 options there, but one is deceiving... The 'with Heavy Duty Brake' kit, much more expensive than the others, is for a special application known as BR6. BR6 I found out from searching is a police pack option. So if you go ahead and buy those pads, they will likely fit on BRG and BRF front hardware too. I only found the BR6 reference on a canadian Mopar reseller site, all others don't mention it, but the price... is $400+ on some US Mopar sites and $600 on a canadian site. Definitely not for the masses :

2014-2022 Jeep Cherokee Pad Kit 68227573AD | Canada Mopar Parts

2014-2022 Jeep Cherokee Pad Kit 68227573AD

www.canadamoparparts.ca

Edit to add an older post where I mention BR6 (aka LX brake option) :

https://www.jeepcherokeeclub.com/threads/front-brakes.249325/post-3020876